Answers
a) The number of H⁺ ions is 10⁻⁹ and it is basic.
b) The number of H⁺ ions is 10⁻⁷ and it is neutral.
c) The number of OH⁻ ions is 10⁻¹³ and it is acidic.
What is pH?Water's pH position indicates how acidic or introductory it is. The range is 0 to 14, with 7 acting as a neutral value. A pH of lesser than 7 denotes a base, while one of lower than 7 suggests acidity.
The pH scale really measures the proportion of free hydrogen and hydroxyl ions in water. Water that contains further free hydrogen ions is acidic, whereas further free hydroxyl ions makes water more introductory. Since chemicals in the water can alter pH, pH is a pivotal sign of a chemical change in the water. In" logarithmic units," pH is expressed. Each value signifies a10-fold variation in the water's acidity or basicness. Ten times as acidic as water because water has a pH of five.
a) [H⁺] = 1 x 10⁻¹⁴/1 x 10⁻⁵ = 10⁻⁹.
Since the [H⁺] < [OH⁻] the solution is basic.
b) [H⁺] = 1 x 10⁻¹⁴/1 x 10⁻⁷ = 10⁻⁷
since the [H⁺] = [H⁺]
The solution is neutral
c) [OH⁻] = 1 x 10⁻¹⁴/1 x 10⁺ = 10⁻¹³
since the [H⁺] > [OH⁻]
the solution is acidic
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Related Questions
A woman with severe preeclampsia is being treated with an iv infusion of magnesium sulfate. this treatment is considered successful if _____.
Answers
In order to keep preeclampsia patients from having seizures, magnesium sulfate treatment is employed. Additionally, it can assist extend pregnancy by up to two days.
When given to a patient with preeclampsia, what is the main effect of magnesium sulfate?Additionally, it is used as a preventative measure for all patients with severe preeclampsia. It is believed that magnesium sulfate works by causing cerebral vasodilation, which lessens the ischemia brought on by cerebral vasospasm during an eclamptic event.
How is eclampsia treated with magnesium sulphate?Magnesium sulfate can reduce peripheral vascular resistance or relieve vasoconstriction by acting as a vasodilator, with effects in the cerebrovasculature or peripheral vasculature.
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For the chemical reaction H₂ (g) + F₂ (g) → 2 HF (g) ∆H° = -79.2 kJ/mol. What is the molar enthalpy (in kJ/mol) for the reaction 3 H₂ (g) + 3 F₂ (g) → 6 HF (g)
Answers
Answer: -237.6
Explanation:
Multiplying both sides of the equation by 3 means you multiply the molar enthalpy by 3.
The relationship between level of economic development and environmental pollution is such that industrial emissions are_____
Answers
The relationship between level of economic development and environmental pollution is such that industrial emissions are directly proportional to the level of economic development.
So, as economic development increases, so does the level of industrial emissions and pollution. This is because economic development leads to more factories, transportation and energy production, all of which contribute to environmental pollution.
What are the factors that influence the level of economic development and environmental pollution?Population size: A larger population can increase economic development, but it can also lead to more environmental pollution.Technology: Advanced technology can increase economic development but can also lead to more emissions of pollutants.Government policies: Government policies can influence the level of economic development and environmental pollution. For example, policies that focus on promoting renewable energy sources and reducing emissions can help reduce pollution.Economic structure: The type and level of economic development in a country can influence the level of pollution. For example, industrialized countries usually produce more pollution than countries with a more agrarian economy.Natural resources: For example, countries that have access to abundant natural resources can use them to produce more goods and services, which can lead to more economic development and pollution.Learn more about level of economic development and environmental:
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Consider the following reaction: 4 NH3(g) + 5 O₂(g) — 6 H₂O(g) + 4 NO(g) Calculate AG at 547 K for a mixture of 2.3 bar NH3(g), 3.0 bar O₂(g), 4.9 bar H₂O(g), and 3.6 bar NO(g). State whether or not the reaction is spontaneous at these conditions. **AG° values can be found in textbook appendix** O-929 kJ/mol; spontaneous -929 kJ/mol; nonspontaneous O 929 kJ/mol; spontaneous 929 kJ/mol; nonspontaneous
Answers
To calculate the AG for the reaction at 547 K for a mixture of 2.3 bar NH3(g), 3.0 bar O₂(g), 4.9 bar H₂O(g), and 3.6 bar NO(g), you can use the following equation:
AG = ∑nG°(products) - ∑nG°(reactants)
where ∑n is the sum of the stoichiometric coefficients of the reactants and products, and G° is the standard Gibbs free energy of the species.
The standard Gibbs free energy of a species can be calculated using the following equation:
G° = G°(298 K) + RTln[P/P°]
where G°(298 K) is the standard Gibbs free energy of the species at 298 K, R is the gas constant (8.314 J/mol*K), T is the temperature in kelvins, P is the pressure of the species, and P° is the standard pressure (1 bar).
Plugging in the values, we get:
AG = (6 H₂O + 4 NO - 4 NH₃ - 5 O₂)
= (6 H₂O - 4 NH₃ - 5 O₂ + 4 NO)
= (6 H₂O - 4 NH₃ + 4 NO - 5 O₂)
= (6 H₂O + 4 NO - 4 NH₃ - 5 O₂)
= 6 G°(H₂O) + 4 G°(NO) - 4 G°(NH₃) - 5 G°(O₂)
= 6(-242.2 kJ/mol) + 4(-90.3 kJ/mol) - 4(-45.9 kJ/mol) - 5(-497.1 kJ/mol)
= (-1453.2 kJ/mol)
Therefore, AG for the reaction at 547 K for a mixture of 2.3 bar NH3(g), 3.0 bar O₂(g), 4.9 bar H₂O(g), and 3.6 bar NO(g) is -1453.2 kJ/mol.
Since AG is negative, the reaction
If the replacement of a Blank in the DNA sequence results in Blank with a codon that codes for Blank amino acid, then the order of the amino acids is affected.
Answers
If the replacement of a base in the DNA sequence results in mRNA with a codon that codes for a different amino acid, then the order of the amino acids is affected.
What is DNA?DNA is an abbreviation for deoxyribonucleic acid and it can be defined as a group of molecules that are found within cells and they are saddled with the responsibility of storing genetic information in all living organisms.
What is translation?In Genetics, translation can be defined as a cellular process through which a genetic code from a sequence of messenger ribonucleic acid (mRNA) molecule is decoded or translated to a specific sequence of amino acids, during the synthesis of protein.
Additionally, a codon simply refers to a sequence of three (3) consecutive nucleotides that act as a genetic unit of life and it is used as a template for the amino acid synthesis which is generally required for protein expression in living organisms.
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Match each microscope with the appropriate description.
transmission electron microscope
scanning electron microscope
compound light microscope
scanning tunneling microscope
has a magnification of 400 to 1,000 times
has a magnification of 100,000 times or
produces a three-dimensional image
maps atoms on the surface of an object
Answers
Compound light microscope has a magnification of 400 to 1,000 times
Transmission electron microscope produces a three-dimensional image
Scanning electron microscope has a magnification of 100,000 times
Scanning tunneling microscope maps atoms on the surface of an object
What are microscopes?A microscope can be described as a laboratory instrument used to examine objects that are too small to be seen by the na-ked eye.
The importance of microscopes can not be over-emphasized as they have opened up a whole new dimension in the science world. With the use of microscopes, scientists were able to discover the
existence of microorganisms, study the structure of cells, and see the smallest parts of plants, animals, and fungi.Compound light microscopes typically provide magnification in the range of 40-1000 times, and are used to view small samples that can not be identified with the nak-ed eye.
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There are three basic rules of electric charge. Opposite charges
the law of conservation of charge. What does it state?
like charges.
and
Answers
Ionic compound are able to conduct electricity.
What is ionic compound?an ionic compound is a chemical compound composed of ions held the together by electrostatic of forces termed the ionic bonding. The compound is to neutral overall,the but consists of positively charged ions called cations and negatively charged ions called anions.
Ionic compounds conduct electricity when molten (liquid) or in aqueous solution (dissolved in the water), because their ions are free to move from place is to to place. Ionic compounds is cannot conduct electricity of when solid, as their ions are held in fixed positions and the cannot move.
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A thermometer that shows temperature as the height of a column of liquid is an analog device because its measurements a. change in steps. b. change continuously. c. are in degrees. d. do not rely on electric current.
Answers
38.5 mL of HCl of unknown concentration is neutralized by 16.8 mL of 0.50M NaOH. Calculate the concentration of the HCl.
Answers
A neutralizing reaction takes place when the acid and base are let to interact. The concentration of HCl is 218.12 M.
What do you mean by Neutralized ?Determine how much 0.100 M HCI solution is required to neutralize 25.0 mL of 0.350 M NaOH. (Response: 87.5 mL) In order to neutralize 124 mL of 0.250 M NaOH solution, determine the volume of 0.100 M HzSO4 solution required. An acid and base process known as neutralization produces only salt and water. The OH- from the base totally neutralizes the H+ from the acid in this reaction. Therefore, we can define a neutralization reaction as a reaction that creates water by removing the H+ and OH- from the reactant. Here is an example to help you.
HCl + NaOH = NaCl + H₂OOH⁻ + H⁺
mol of solution = molarity × Liter solution
mol HCL = 16.8 ml × 0.50 M
= 8.4 mol HCl
Concentration of HCl = 8.4/0.0385
= 218.12 M
From the foregoing, it is obvious that the reaction converted the OH- and H+ from the base into water.
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Density is a common physical property of substances that can give insight into the structure of the substance on the atom or molecular level. You are a geologist and have discovered a mineral sample that needed identifying. The first method of choice is the density of the sample. You want to find the volume by water displacement, so you lower the sample into a graduated cylinder with an initial volume of water of 26.90 mL. The volume of water rises to 43.70 mL. You also mass the sample and determine it to be 25.10 g. From this information determine the density of the mineral sample. Use the correct number of significant figures in your answer and include units. Your Answer: Answer units
Answers
The density of the mineral sample using correct number of significant figures is 1.494g/mL
Density is the mass of matter per unit volume. Density is a standard mechanical quantity. The most common symbol for density is ρ, but the Latin letter D can also be used.
Formula
ρ =[tex]{\frac {m}{V}}[/tex]
ρ = density
m = mass
V = volume
Mass of the sample = 25.10 g
Volume of the sample = volume of water displaced by the sample
= (43.70 - 26.90) mL
= 16.80 mL
Density = mass / volume
= 25.10 g / 16.80 mL
= 1.045 g/mL
Hence, the density of the mineral sample = 1.494 g/mL
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Is electric current responsible for creating magnetic fields?
Answers
Hello,
I hope you and your family are doing well!
Yes, electric current is responsible for creating magnetic fields.
Explanation:
According to the principles of electromagnetism, a moving electric charge creates a magnetic field around it. The magnitude of the magnetic field is directly proportional to the strength of the electric current and the distance from the current. This is why electric current flowing through a wire creates a magnetic field around the wire. The direction of the magnetic field is determined by the direction of the electric current and the right-hand rule.
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What is the entropy when a system goes from 4 microstates to 5 microstates? Group of answer choices 3.08 x 10-24 -3.08 x 10-24 0.223 0
Answers
A count of all potential microscopic states (microstates) that could exist for a system in thermodynamic equilibrium and be consistent with its macroscopic thermodynamic parameters, which make up the system's macrostate.
What is entropy S used to measure?A system's thermal energy per unit of temperature that cannot be used for productive work is measured by entropy. The amount of entropy is a measurement of the molecular disorder of a system since work is produced by ordered molecular motion.
In terms of microstates, what does entropy mean?Entropy was first described by Ludwig Boltzmann as the count of alternative microscopic states (microstates) of a system in thermodynamic equilibrium that are consistent with its macroscopic thermodynamic parameters, which make up the system's macrostate.
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Aldol condensation and subsequent dehydration of the aldol adduct will provide the desired aldehyde intermediate.
Answers
Aldol reaction followed by dehydration to produce enone are the two main phases that make up the entire process.
The mechanism for the acid-catalyzed hydration of an alkene involves two stages. Aldol condensation produces a substance known as -hydroxy aldehyde or -hydroxy ketone. A conjugated enone is created when an enolate ion interacts with another carbonyl molecule in aldol condensation. The procedure consists of two steps: an aldol reaction that yields an aldol product and a dehydration reaction that produces the finished product by removing water from the mixture. The aldol condensation reaction occurs with aldehydes that include alpha hydrogen atoms. Since benzaldehyde lacks an alpha hydrogen, aldol condensation cannot occur. There is at least one alpha hydrogen in each and every alternative.
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Which of these has lowest viscosity as a liquid? a. CH3CH2CH3b. CH3CH2NH2c. CH3OCH3d. CH3Cle. CH3CH2OH
Answers
Among the following (a) CH₃CH₂CH₃ has the lowest viscosity as a liquid.
A liquid's ability to flow is due to the fact that its molecules can move around and around each other. The degree to which a substance resists flow is referred to as its viscosity. High viscosities are exhibited by liquids such as glycerin and honey, which a very lower flow rate. Those with low viscosities, such as ether or gasoline, have excellent flow characteristics.
The magnitude of the intermolecular forces and, more specifically, the structures of the molecules that make up a liquid are what determine its viscosity. In general, liquids with molecules that are polar or that are capable of forming hydrogen bonds have a greater viscosity than comparable nonpolar substances.
(A) The intermolecular force of attraction in CH₃CH₂CH₃ is provided by hydrogen bonds. Because the hydrogen bonding is so much stronger than the dispersive force, it results in a significantly higher viscosity.
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Which energy transformations happen when the students close the switch on the circuit and the blades of the fan begin to spin?
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Answer: When we switch on a fan, the fan converts a significant portion of the electrical energy into kinetic energy of the fan blades. Some part of electric energy is converted into heat. energy transformation will be:-
Electrical energy → Kinetic energy
Explanation:
Can anyone help me with this :(
Does this mutation affect the protein produced? Explain
What process creates mRNA?
Answers
Answer:
Sometimes, gene variants (also known as mutations) prevent one or more proteins from working properly. By changing a gene's instructions for making a protein, a variant can cause a protein to malfunction or to not be produced at all./:mRNA is created during transcription. During the transcription process, a single strand of DNA is decoded by RNA polymerase, and mRNA is synthesized. Physically, mRNA is a strand of nucleotides known as ribonucleic acid, and is single-stranded.
The dilution equation, rearranged to solve for 1 is 1=221 where 1 and 1 are the initial concentration and volume, respectively, and 2 and 2 represent the final concentration and volume, respectively. A student needs to prepare 50.0 mL of 1.20 M aqueous H2O2 solution from a 4.60 M H2O2 stock solution. Identify the values of 2, 2, and 1 in this situation.
Answers
M₁ = 1.20 M
M₂ = 4.60 M
V₂ = 50.0 ml
Volume of 50.0 ml H₂O₂ stock solution required 191.7 ml.
What is dilution equation?Using a stock solution and the following formula, one may create a given quantity of a diluted solution: M₁V₁ = M₂V₂, where V₁ is the volume of stock solution required to create the new solution. M₁ = Stock solution concentration. V₂ denotes the final volume of the new solution.
Given that,
A student needs to prepare 50.0 ml of 1.20 M aqueous H₂O₂ solution from a 4.60 M H₂O₂ stock solution.
As we know,
M₁V₁ = M₂V₂
M₁ = 1.20 M
M₂ = 4.60 M
V₂ = 50.0 ml
Now, V₁ = M₂V₂ / M₁
V₁ = (4.60 M × 50.0 ml ) / 1.20 M
V₁ = 191.7 ml
So, volume of 50.0 ml H₂O₂ stock solution required 191.7 ml.
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Balance the equation below to show the relationship between gehlenite (Ca Alysio,) and its component metal and semimetal oxides. 1st attempt See Periodic Table Seeh Balance the equation by adding the appropriate coefficients I CAO ) A10, sio, ChAlso,
Answers
To make sure that all of the atoms in the following equation are balanced, we must multiply CaO by a coefficient of 2.
2CaO+Al2O3+SiO2---->Ca2Al2Si O7
What are a few illustrations of oxides?atomic oxygen: One example of a neutral oxide is water. There is no acid or base in water. Carbon monoxide, nitric oxide, and nitrous oxide are more instances of neutral oxides. Carbon dioxide, sulfur dioxide, phosphorus pentoxide, sulfur trioxide, chlorine oxides, etc. are some examples of acidic oxides.
Gold is it an oxide?Because gold is the least metalloid, it is not found naturally as an oxide. It does not interact with atmospheric oxygen in any way, hence it cannot be called an oxide.
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Express the number of moles of AL, S, and O atoms numerically, separated by commas
Answers
The number of moles of Al, S, and O atoms in 5.00 moles of Al₂(SO₄)₃ is equal to 10 mol, 15 mol, and 60 mol respectively.
What is a mole?A mole can be described as a scientific unit to calculate the quantity of a given substance and generally the huge number of quantities of molecules, atoms, ions, or other particular particles.
The number of elementary units in one mole was found to be equal to 6.023 × 10 ²³ which is known as Avogadro’s number.
Given the number of moles of Al₂(SO₄)₃ = 5 mol
One mole of Al₂(SO₄)₃ contain Al = 2 moles
Then 5 mol of Al₂(SO₄)₃ contain Al = 2 × 5 = 10 mol
One mole of Al₂(SO₄)₃ contain S = 3 moles
Then 5 mol of Al₂(SO₄)₃ contain S = 3 × 5 = 15 mol
One mole of Al₂(SO₄)₃ contain Oxygen (O) = 12 moles
Then 5 mol of Al₂(SO₄)₃ contain Al = 12 × 5 = 60 mol
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Your question is incomplete, most probably the complete question was:
Calculate the number of moles of aluminum, sulfur, and oxygen atoms in 5.00 moles of aluminum sulfate, Al₂(SO₄)₃. Express the number of moles of Al, S, and O atoms numerically, separated by commas.
please draw a complete arrow pushing mechanism for a generic electrophilic aromatic substitution. you can use e for the electrophile that adds.
Answers
During resonance, the molecule's electrons remain stationary. A probability cloud of electrons is what we can make out. Chlorination, bromination, nitration, and sulfonation are the six primary electrophilic aromatic substitution processes.
What is aromatic substitution?
They were provided the arrow-pushing mechanism for the following general electrophilic aromatic substitution process, which involved benzene and Turk. When benzene and bromine combine in an abrasive environment, liquid bromine, no solvent, and the Lewis acid FeBr3 act as catalysts. An atom that is connected to an aromatic ring is replaced with an electrophile in electrophilic aromatic substitution processes. a comprehensive arrow pushing mechanism for an electrophilic substitution of any kind of aromatic molecule.
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In this experiment, you will prepare a standard solution for a calibration curve for the formation of FeSCN2 complex by reaction different volumes of 0.002M Fe(NO,), and 0.002 M NaSCN. You will use 0.1M HNO, for all dilutions. Using the table, Calculate the equilibrium concentrations of FeSCN2+ Vol of Fe Vol of SCN 0.1 M HNO3 (mL) Equilibrium (mL) 10.00 10.00 concentration Fe[SCN] (mL) 0.00 1.00 2.00 3.00 4.00 5.00 10.00 9.00 8.00 7.00 10.00 10.00 10.00 6.00 5.00 10.00 Experiment 12 Le Chatelier's Principle: Chemical Equilibrium and Determination of Equilibrium Constant: Pre-Lab
Answers
It is possible to calculate the equilibrium constant and shift in equilibrium position of a chemical process under stress.
What is the guiding philosophy of Le Chatelier, and why is it significant?The position of the equilibrium in a chemical reaction can be predicted with the aid of Le Chatelier's Principle in response to changes in temperature, concentration, or pressure. This is crucial, especially for industrial applications where it's crucial to predict and maximize yields.
Where can the Le Chatelier principle be used?An illustration of how Le Chatelier's concept can be used to forecast how concentrations will change in response to various perturbations Examples include altering the size of the reaction vessel, altering the quantity of solid product, using inert gas, and including a catalyst.
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What quantity of moles of Care formed upon complete reaction of 2
according to the generic chemical reaction:
A+2 B ➡️ C
Answers
If 2 moles of B react with 1 mole of A, the quantity of moles of C that are formed upon complete reaction is 2 moles.
How mole is conserved in chemical reaction?
Because there are always the same amounts of reactants and products present in a chemical reaction, the mole is conserved. The law of conservation of mass states that the total masses of the reactants and products in a chemical reaction are equal, governs this idea.
The idea of molecular weight can be used to translate the law of conservation of mass into moles. The mass of one mole of a substance, measured in grammes, is its molecular weight. For instance, water (H2O) has a molecular weight of 18.015 g/mol, which indicates that one mole of water weighs 18.015 grammes.
The law of conservation of mass can be stated as follows when describing a chemical reaction in which two reactants, A and B, react to form two products, C and D: In the equation n(A) + n(B) = n(C) + n(D), n(A) denotes the quantity of reactant A, n(B) the quantity of reactant B, n(C) the quantity of product C, and n(D) the quantity of product D. According to this equation, there are exactly as many moles of reactants as there are of products. Because the total number of reactant and product moles stays constant throughout the reaction, this indicates that the mole is conserved in chemical reactions.
It's crucial to remember that regardless of the type of reactants or products involved, the law of conservation of mass holds true for all chemical reactions. This principle, which is a fundamental law of chemistry, is crucial for comprehending how matter behaves.
According to the problem:
In the chemical reaction A+2B=C, the quantity of moles of C that are formed upon complete reaction depends on the number of moles of A and B that are present.
According to the given information, 2 moles of B react with 1 mole of A to form C. This means that the ratio of B to A is 2:1, and the ratio of C to A is 1:1.
To determine the number of moles of C that are formed upon complete reaction, use the mole ratios to calculate the number of moles of C that are produced for every mole of A that is consumed. In this case, 1 mole of A reacts with 2 moles of B to produce 1 mole of C.
Therefore, if 2 moles of B react with 1 mole of A, the quantity of moles of C that are formed upon complete reaction is 2 moles. This is because 2 moles of B are equivalent to 1 mole of C, and the mole ratio between B and C is 2:1.
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Why is it important that we change only one factor when conducting an experiment?
Answers
Changing only one factor in an experiment is important because it allows you to isolate the effects of that particular factor on the outcome of the experiment. This makes it easier to identify the relationship between the factor you are testing and the outcome, and to draw conclusions about cause and effect. If you change multiple factors at the same time, it can be difficult to determine which factor is responsible for any changes you observe in the outcome, and your results may be less reliable. By keeping all other factors constant and only changing the one factor you are interested in, you can more accurately determine the effect of that factor on the outcome of the experiment.
Answer: If you change multiple factors in an experiment, then you wouldn't know which factor is responsible for any changes.
Explanation:
If something changes when you change only one factor in an experiment, then you can easily note down the cause of said change.
A 49.8−g sample of ethylene glycol, a car radiator coolant, loses 842 J of heat. What was the initial temperature of the ethylene glycol if the final temperature is 32.5°C? (c of ethylene glycol = 2.42 J/g·K)
Answers
Initial temperature is 740.417K of the ethylene glycol.
According to the first law of thermodynamics dU= dq+ dw, and system loose temperature thus dw= -842J and for adiabatic process dq=0 so dU=dw=-842J.
Also dU= nCvdT, and n= [tex]\frac{49.8}{62}[/tex]=0.8mol.
Cv=2.42J/gK
and dT=T2-T1=305.5-T1
Thus -842=0.8*2.42*(305.5-T1)
T1=740.417K
What is first law of thermodynamics?
Energy can only be transferred or transformed from one form to another; it cannot be created or destroyed.
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In a 49.8−g sample of ethylene glycol, a car radiator coolant, loses 842 J of heat, the initial temperature of the ethylene glycol is 740.417K.
The first rule of thermodynamics states that dU = dq+ dw, and since the system loses temperature as a result, dw = -842J. Similarly, for an adiabatic process, dq = 0, therefore dU = dw = -842J.
Also, n = 0.8mol, and dU = nCvdT.
dT = T2-T1
=305.5-T1 and
Cv = 2.42J/gK
In light of this,
-842 = 0.8*2.42*(305.5-T1)
T1 = 740.417 K
What is the thermodynamics first law?
Energy cannot be produced or discarded; it can only be transformed from one kind to another.
What are entropy and enthalpy?
Entropy is the amount of intrinsic disorder within a substance, whereas enthalpy is the quantity of internal energy. Enthalpy is nonzero for water because it is zero for elemental compounds like hydrogen gas and oxygen gas (regardless of phase).
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Compare and contrast substrate level phosphorylation and oxidative phosphorylationSubstrate level phosphorylation is a direct type of phosphorylation in which a phosphate group is directly transferred to an ADP molecule. Oxidative phosphorylation is an indirect method of phosphorylation in which the energy liberated in the electron transport chain is used in generating ATP.
Answers
The Krebs cycle and glycolysis both involve substrate level phosphorylation. Inside the electron transport chain, oxidative phosphorylation takes place.
What is the basic principle of oxidative phosphorylation?Electrons from NADH and FADH2 mix with O2 during oxidative phosphorylation, and the energy generated from these oxidation/reduction events is utilized to power the production of ATP from ADP. Known also as electron transport-linked phosphorylation, oxidative phosphorylation
In how many oxidative phosphorylations does ATP get produced?The Kreb's cycle produces 24-28 ATP molecules from one sugar molecule that has already been converted into pyruvate. Two theoretical approaches are utilized to investigate oxidative phosphorylation: metabolic lead to the current and irregular thermodynamics.
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In the following reaction, 8.24 mol of P4 mix with 24.2 mol of O₂.
P4 (s) + 5 O2 (g) → 2 P₂O5 (s)
a. Find the limiting reagent. Explain.
b. How many moles of P2O5 (s) will be produced?
C. How many grams of P₂O5 (s) will be produced?
Answers
The limiting reagent is O₂ because there is only 24.2 mol of O₂ available for the reaction, and 8.24 mol of P4 is needed to react with all of the O₂.
What is reaction?Reaction is a response to a stimulus or event. It is an action or behavior that is often automatic and instinctive. Reactions can be emotional, biological, chemical, or physical. Examples of reactions include fear, laughing, crying, or sweating. Reactions can also be mental, such as forming an opinion or making a decision. Depending on the context, a reaction can be positive or negative. A reaction can be short lived, or it can cause a longer lasting impact. Understanding reactions is important for many fields, such as psychology, sociology, and medicine.
a. The limiting reagent is O₂ because there is only 24.2 mol of O₂ available for the reaction, and 8.24 mol of P4 is needed to react with all of the O₂.
b. 12.1 mol of P2O5 (s) will be produced.
c. The number of grams of P₂Oᴸ (s) produced can be calculated using the molar mass of P₂Oᴸ (s). 12.1 mol of P2O5 (s) has a mass of 283.9 g.
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identify the three components of the SN2 reaction in the correct order nucleophile, electrophile and leaving group
a. Blue, Green, Red
B. Green, Red, Blue
C. Red, Green, Blue
D. Green, blue, red
E. Blue, red, green
Answers
Red, Green, and Blue of both the SN2 reaction are the nucleophile, electrophile, and leaving group in the proper order, according to the provided statement.
What are some instances of nucleophiles?A nucleophile is a reagent that transports an electron pair. Curved-arrow notation shows the transfer of such a pair of electrons from of the nucleophilic attack to the electrophile. Negatively charged species like the NC - ion of cyanide serve as an illustration of a nucleophile.
What makes it a nucleophile?Christopher Kelk Ingold replaced the words anionoid and cationoid, first suggested by A. J. Lapworth in 1925, with nucleophile and electrophile in 1933. The Greek word o, philos, which means friend, is taken from the term nucleus to get the phrase nucleophile.
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The chemical equation for a reaction between K2Cr2O7 and HCl is shown.
K2Cr2O7 + 14HCl → 2CrCl3 + 2KCl + 3Cl2 + 7H2O
Which of the following identifies the reactant that acts as an oxidizing agent in the reaction and explains the answer?
K2Cr2O7, because the oxidation number of K changes from +6 to +3.
K2Cr2O7, because the oxidation number of Cr changes from +6 to +3.
HCl, because the oxidation number of H changes from −1 to 0.
HCl, because the oxidation number of Cl changes from −1 to 0.
Answers
Answer:
The correct answer is:
K2Cr2O7, because the oxidation number of Cr changes from +6 to +3.
Explanation:
In this reaction, K2Cr2O7 is the reactant that acts as an oxidizing agent. An oxidizing agent is a substance that causes another substance to be oxidized (to lose electrons). In this case, the oxidation number of Cr in K2Cr2O7 changes from +6 to +3 as it is oxidized by HCl. This indicates that K2Cr2O7 is acting as the oxidizing agent in the reaction.
HCl is not acting as an oxidizing agent in this reaction. The oxidation number of H in HCl does not change, and the oxidation number of Cl changes from -1 to 0, which indicates that it is being reduced (gaining electrons).
It's important to note that the concept of oxidation numbers is used to keep track of the electrons that are transferred during a chemical reaction. The oxidation number of an element in a compound is a measure of the degree to which it has been oxidized or reduced. In general, an element that has a higher oxidation number before a reaction will have a lower oxidation number after the reaction, indicating that it has been reduced, while an element with a lower oxidation number before the reaction will have a higher oxidation number after the reaction, indicating that it has been oxidized.
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A chemical bond is a permanent attraction between atoms or ions that allows the formation of molecules and crystals. Bonding can result from electrostatic forces between oppositely charged ions, as in ionic bonding, or through sharing of electrons, as in covalent bonding.
Both NH₃ and NH₄⁺ ions have SP³ hybridization. However, NH₃ has one lone pair and three bond pairs. Due to the strong repulsive forces between the lone electron pair and the bonding electron pair, the geometric structure of NH₃ is Distorted and pyramidal despite sp³ hybridization. The NH₄⁺ ion has four bonding pairs. The repulsion between bonding pairs is small compared to the repulsion between bonding pairs and lone pairs. So the geometry is a tetrahedron.In HCN, carbon is attached to nitrogen with a triple covalent bond consisting of one sigma bond and two pi bonds. A sigma bond is formed by overlapping hybridized orbitals, and the remaining two unhybridized orbitals overlap to form two pi bonds.1-Propanol is a member of the alcohol family, meaning it has a hydroxyl (-OH) group at the end of the chain. The oxygen atom of the hydroxyl group forms a hydrogen bond with water, making it soluble in water.The conduction band is the band of electron orbitals to which electrons can jump when excited from the valence band. Electrons have enough energy to move freely in matter in these orbitals, this movement of electrons produces an electric current.To know more about chemical bonds, visit:
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In a rural region of India, scientists collected data of different pesticide residue levels from closely located farming plots. Some of these plots used integrated pest management biopesticides, while others used chemical pesticides to control pests. The data below show levels of four pesticide residues found in tomato and cucumber crops in the two treatment plots.
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By defending crops from pests and diseases and increasing yield, pesticides play a significant part in ensuring global food security.
Because some pesticides residues gather in fat, trim any excess fat from the meat, skin, and bones of poultry and fish. CHOOSING A VARIATION OF FOODS Consume a variety of foods from different sources. You will receive a better variety of nutrients as a result, and your risk of pesticide exposure will be lower. Pesticide residue testing is a procedure that determines the amounts of pesticide residue in food items by a thorough chemical and microbiological analysis, giving food producers and manufacturers assurance in the components of their products.
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