Can someone help me I am stuck on this question it would mean the world if u helped me =) have a nice day!

The equation in which the enthalpy of formation is the same as the enthalpy of reaction is option A.

The term enthalpy has to do with the heat that is giving out or is absorbed in a reaction. We know that the enthalpy of formation would refer strictly to the heat that is given out or absorbed when a substances is formed from its constituents under standard conditions.

We know that when we are looking at the enthalpy of formation of a substance, we are looking at the way that the elements that make up the substance are able to combine and these elements that are becoming combined in the substance would have to do that under standard conditions so as to generate the equation of the enthalpy of formation of the substance.

Learn more about enthalpy:https://brainly.com/question/13996238

#SPJ1

The following compound: CH3CH2CH3 is propane and this a hydrocarbon and is alkane. Propane seems as a drab fueloline with a faint petroleum-like odor.

The vapors are heavier than air and a flame can flash returned to the supply of leak very easily. The leak can be both a liquid or vapor leak. The vapors can asphyxiate through the displacement of air. Under extended publicity to hearthplace or warmness the boxes might also additionally rupture violently and rocket.

CH3 CH2 CH3 is a compound referred to as a hydrocarbon, greater in particular an alkane. The not unusualplace call for this compound is propane, that is a form of fueloline extensively used as a gasoline supply. It is a hydrocarbon as it includes best hydrogen and carbon atoms.

Read more about compound;

https://brainly.com/question/26487468

#SPJ4

Butane's experimental molar mass is 0.23 g/0.0040 moles, or 58 g/mole.13. The molecular formula for butane is C4H10.Calculate its molar mass.58.1 g/mole

We may determine the atomic weights of the elements using their periodic tables, and we discover the hydrogen has had an atomic mass of 1, while that of oxygen is 16.We sum the contributions out of each atom to determine the molecular weight with one water molecule, which is 2(1) + 1(16) = 18 grams/mole.

The ratio of a average mass with one molecule of the a compound or element to one-twelfth the mass of an atom or carbon-12 is known as the relative molecular mass.Ar has a mass number that is the same as its numerical value.

To know more about molecule visit:

https://brainly.com/question/19922822

#SPJ4

The atomic number of an atom is the number of protons in the nucleus of the atom, while the mass number is the total number of protons and neutrons in the nucleus. The atomic number is unique to each element and determines the identity of the element, while the mass number is a measure of the mass of the atom and can vary within an element.

Atoms are electrically neutral when the number of protons in the nucleus is equal to the number of electrons orbiting the nucleus. This means that the positive charge of the protons is balanced by the negative charge of the electrons, resulting in an overall neutral charge for the atom.

The atomic number of each atom represents the number of protons in the nucleus of the atom. This number is unique to each element and determines the identity of the element. For example, the atomic number of hydrogen is 1, which means that it has one proton in its nucleus and is therefore a unique element. The atomic number is used to arrange the elements in the periodic table and is an important property of atoms.

Considering the Gay-Lussac's law, the final temperature when the gas is heated at constant volume until the pressure triples is 909 K or 636° C.

Gay-Lussac's law establishes the relationship between the temperature and pressure of a gas when the volume is constant. This law says that the pressure of a gas is directly proportional to its temperature: if the temperature increases, the pressure will increase, while if the temperature decreases, the pressure will decrease.

Mathematically, Gay-Lussac's law states that the ratio between pressure and temperature always had the same value:

P÷ T= k

where

Analyzing an initial state 1 and a final state 2, it is fulfilled:

P₁÷ T₁= P₂÷ T₂

In this case, you know that the gas is heated at constant volume until the pressure triples. This is, P₂=3×P₁

Replacing in Gay-Lussac's law:

P₁÷ T₁= (3×P₁)÷ T₂

T₂× (P₁÷ T₁)=(3×P₁)

T₂= (3×P₁)÷ (P₁÷ T₁)

T₂= 3×T₁

If one mole of oxygen gas is at a temperature of 30°C of 303 K (being 0 C= 273 K), then:

T₂= 3×303 K

T₂= 909 K = 636° C

Finally, the final temperature is 909 K or 636° C.

Learn more about Gay-Lussac's law:

brainly.com/question/30085244

brainly.com/question/2683502

#SPJ1

The different types of atomic spectrometers are emission spectrometer, absorption spectrometer and continuous spectrometer which give emission spectrum, absorption and continuous spectrum respectively.

Emission spectrum is defined as a spectrum of a chemical compound or substance composed of frequencies of electromagnetic radiation. Radiations which are emitted while electron make transition from higher to lower energy level.

Energy of photon is equal to the difference between the two energy states . There are many possible electronic transitions in an atom and every transition has a specific wavelength.

Collection of different transitions with respect to different wavelengths makes up an emission spectrum.Emission spectrum of each element is unique and therefore spectroscopy is used to identify elements which are present in different substances.

Learn more about emission spectrum,here:

https://brainly.com/question/27268130

#SPJ2

In the following reactions, NADH is converted to NAD+, FMN to FMNH2, Fe+2 to Fe+3, and CoQ to CoQH2.

When an electron is taken away from a molecule throughout a chemical reaction, the process is known as oxidation. What occurs during oxidation? There is an electron transfer during oxidation. In other words, there is an electron loss during oxidation.

The removal of electrons from the a material causes oxidation. Additionally, it is when a material gains oxygen. When magnesium combines with oxygen to generate magnesium oxide, for instance, it is oxidized: The compound magnesium oxide is created when magnesium and oxygen are combined.

To know more about oxidizes visit:

https://brainly.com/question/16976470

#SPJ4

The standard cell potential (also known as the standard electrode potential) is a measure of the potential difference between two electrodes in an electrochemical cell under standard state conditions.

(a) Standard Cell Potential for Mg(s) + Ni2+(aq)⟶ Mg2+(aq) + Ni(s):

E0cell = (0.79 - (-0.25))V = 1.04 V.

This reaction is spontaneous under standard state conditions.

(b) Standard Cell Potential for 2Ag+(aq) + Cu(s)⟶ Cu2+(aq) + 2Ag(s):

E0cell = (0.34 - (-0.52))V = 0.86 V.

This reaction is spontaneous under standard state conditions.

(c) Standard Cell Potential for Mn(s) + Sn(NO3)2(aq)⟶ Mn(NO3)2(aq) + Sn(s):

E0cell = (0.15 - (-0.14))V = 0.29 V.

This reaction is spontaneous under standard state conditions.

(d) Standard Cell Potential for 3Fe(NO3)2(aq) + Au(NO3)3(aq)⟶ 3Fe(NO3)3(aq) + Au(s):

E0cell = (1.23 - (-1.50))V = 2.73 V.

This reaction is spontaneous under standard state conditions.

Learn more about standard cell potential at : https://brainly.com/question/29653954

#SPJ4

The concentration terms are molality, normality and mole fraction. Molarity can be used to find out the ionic strength of any solution. Therefore, 0.050moles of sodium hypobromite (NaBrO) should be added to 1.00 L of 0.050 M hypobromous acid (HBrO) to form a buffer solution of pH 9.15

Molarity can be calculated by dividing number of moles of solute by volume of solution in litre. Molarity is affected by temperature. Its unit is mole/liter. It measure the concentration of any solute in a solution.

Mathematically,

Molarity= number of moles of solute/volume of solution in litre

Where,

moles= ?

volume= 1.00 L

Molarity=0.050 M

Substituting values in equation, we get

0.050=number of moles of solute/1.00

number of moles of solute=0.050moles

Therefore, 0.050moles  of sodium hypobromite (NaBrO) should be added to 1.00 L of 0.050 M hypobromous acid (HBrO) to form a buffer solution of pH 9.15

Learn more about Molarity, here:

https://brainly.com/question/16727614

#SPJ1

Nitrous acid, phosphoric acid, sulfurous acid and carbonic acid are the  weak acids. Hydrochloric acid and perchloric acid is a strong acid. This can be Written in the aqueous solution.

Nitrous acid is a weak acid and can be written in the aqueous solution as,

HNO2 (aq.) ----> H+ (aq.) + NO2- (aq.)

This is very unstable and exists only in aqueous solution.

Hydrochloric acid is a strong acid and can be written in the aqueous solution as,

HCl(aq.) ------> H+ (aq.) + Cl -(aq.)

perchloric acid  is a strong acid and can be written as

HClO4 (aq.) ---->   H+ (aq.) + ClO4- (aq.)

Phosphoric acid is a weak acid. It is a triprotic acid that exists as a dense liquid. It is an irritant or corrosive to the skin, eyes. It can be written in the aqueous solution as,

H3PO4 (aq.) ----> H+ (aq.) + H2PO4- (aq.)

sulfurous acid is a weak acid and can be written as,

H2SO3 (aq.) ----> H+ (aq.) + HSO3- (aq.)

carbonic acid is a weak acid. Carbonic acid is a carbon-containing compound which has the chemical formula H2CO3. This can be written in the aqueous solution as,

H2CO3 (aq.)  ----> H+ (aq.) + HCO3- (aq.)

To learn more about weak and strong acid please visit:

https://brainly.com/question/12811944

#SPJ4

Answer:

3.51 x 10²¹ molecules H₂O

Explanation:

To find the amount of molecules in the sample, you need to multiply the amount of moles by Avogadro's Number. Avogadro's Number is a ratio comparing the amount of molecules per every 1 mole. It is important to arrange the ratio in a way that allows for the cancellation of units (moles should be in the denominator). The final answer should have 3 sig figs like the given value (0.00583 = 3 sig figs).

Avogadro's Number:

6.022 x 10²³ molecules = 1 mole

0.00583 moles H₂O           6.022 x 10²³ molecules
--------------------------------  x  --------------------------------------  =  3.51 x 10²¹ molecules
                                                          1 mole
                                           

Directly inversely correlated are the following quantities: pressure and absolute temperature, volume and moles, volume and absolute temperature, and density and molar mass. Volume and pressure are inversely correlated.

A substance's molar mass is defined as its molecular weight in grams. By adding the molar masses of a substance's constituent atoms, as demonstrated in this video, we may get the substance's molar mass. Then, to convert between mass and the quantity of moles of the material, we may utilize the computed molar mass.

The sum of all the atoms' individual masses in grams that make up a mole of a certain molecule is known as the molar mass, sometimes referred to as molecular weight.

To know more about Molar mass visit:

https://brainly.com/question/22997914

#SPJ4

Answer:

A

Explanation:

Based on a ruler in centimeters, with ten divisions between each centimer mark, you will have marks at every 0.1 cm.

Then, the measure of the length of a metal rod should have 1 decimal place.

That decimal place means limiters, given that 1 mm = 0.1 cm.

Answer:

A

Explanation:

Based on a ruler in centimeters, with ten divisions between each centimer mark, you will have marks at every 0.1 cm.

Then, the measure of the length of a metal rod should have 1 decimal place.

That decimal place means limiters, given that 1 mm = 0.1 cm.

The closest packed formations always have six atoms in a plane surrounding each atom.

74% of the available space is effectively filled by the configuration in a cubic closest packing. The second layer of spheres is stacked on top of half of the first layer's depressions, much like in hexagonal closest packing.

Placing spheres in Cartesian space with their centers at integer coordinates is known as simple cubic packing. Face-centered cubic packing is achieved by layering closely packed spheres such that every third layer's spheres overlap one another.

To know more about atom visit:-

https://brainly.com/question/13654549

#SPJ4

The right order of processes for converting pyruvate to acetyl-CoA is by the decarboxylation of pyruvate by thiamine pyrophosphate to produce hydroxyethyl-TPP.

Given that no heat is introduced when edibles, tinctures, or other consumable products are made, decarboxylation one of the most crucial processes. Tetrahydrocannabinol (THC) and cannabidiol, two of the plant's most important cannabinoids, are activated by decarbing (CBD).

To get high from any cannabis product, decarboxylation must occur. The decarboxylation procedure is still required in order to activate the marijuana in the edible before intake even if eating edibles doesn't include heat like smoking a joint or using a vape pen.

To know more about decarboxylation  visit:

https://brainly.com/question/29573197

#SPJ4

Answer:

At equilibrium, the partial pressure of a gas is equal to the product of its equilibrium constant and the partial pressure of the other gases it reacts with. In this case, the equilibrium constant is given as K=6.9×10−6 at 1000 K, and the partial pressure of SO2 and Cl2 are both 0.760 bar. Therefore, the partial pressure of SO2Cl2 at equilibrium is:

6.9×10−6 * 0.760 bar * 0.760 bar = 4.3×10−8 bar

So the partial pressure of SO2Cl2 at equilibrium is 4.3×10−8 bar.

There are so many types of chemical reaction reaction like combination reaction, double displacement reaction. To solve such this we must know the concept of equilibrium reaction. Therefore, the partial pressure of SO[tex]_2[/tex]Cl[tex]_2[/tex] at equilibrium is 4.3×10⁻⁸bar.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved.

The balanced equation can be written as

SO[tex]_2[/tex](g)+Cl[tex]_2[/tex](g)⇌SO[tex]_2[/tex]Cl[tex]_2[/tex](g)

K=partial pressure of SO[tex]_2[/tex]Cl[tex]_2[/tex] ÷(partial pressure of SO[tex]_2[/tex] × partial pressure of Cl[tex]_2[/tex] )

Substituting all the given values, in the above equation, we get

6.9×10⁻⁶ = (0.760 bar × 0.760 bar)÷partial pressure of SO[tex]_2[/tex]Cl[tex]_2[/tex]

              = 4.3×10⁻⁸bar

Therefore, the partial pressure of SO[tex]_2[/tex]Cl[tex]_2[/tex] at equilibrium is 4.3×10⁻⁸bar.

Learn more about the chemical reactions, here:

https://brainly.com/question/3461108

#SPJ2

The change in the internal energy of a gaseous system that absorbs 21 J of heat and does 8.0 J of work by expanding is 13 J

Energy can only be transformed; it cannot be created or destroyed, according to the First Law of Thermodynamics. For any system, energy transfer examples include mass crossing the control border, external work, or heat transfer over the barrier. The vigor and vitality required for ongoing physical or mental activity is referred to as energy. Heat is the transfer of kinetic energy between two substances, or from an energy source to a material or object. Any action that needs both mental and physical effort to achieve a goal or result is considered work.

ΔE˭q˖w

q= heat added or lost from system

w= work done by system or on system

q is negative when heat is lost

w is negative when a system affects its environment

here, q˭21 and w˭8

ΔE˭21˖(˗8)

ΔE˭13 J

To know more about mass visit:

https://brainly.com/question/19694949

#SPJ1

The energy of the wave can be obtained as 6.6 * 10^-16 J.

We know that the energy of a wave has to do with the energy that is possessed by the wave and we can be able to obtain this energy by the means of the equation of Max Plank.

We know that we have the following equation;

E = hf

h = Plank's constant

f = Frequency of the wave

Then we have;

E = 6.6 * 10^-34 Js * 1 * 10^18 Hz

E = 6.6 * 10^-16 J

The radio waves have an energy of about 6.6 * 10^-16 J.

Learn more about energy of a wave:https://brainly.com/question/9624826

#SPJ1

Answer:

3.2877204

Explanation:

In joules, electrical energy could be quantified.Volts are used to measure electrical potential.

When referring to this attribute in relation to electrical applications, it is more frequently referred to as voltage. Voltage is a measurement of the energy that accompanies the transfer of charge.The unit of measurement for potentials is the volt (V), which is equal to one joule in energy for every coulomb of charge.

The potential differential between both the two electrodes of an electrochemical cell, which develops when electrons are transmitted through the open circuit of the a cell that has not yet reached equilibrium, is known as the cell potential.

To know more about electrical visit:

https://brainly.com/question/8971780

#SPJ4

Substances in which atoms are  held together by polar covalent bonding is b)CsCl.So,correct option is b.

Polar covalent bond is a kind of compound bond where one sets of electrons is shared unevenly between two molecules. For instance, Hydrogen chloride (HCl) particle. The holding of hydrogen and chlorine iotas inclines more towards Cl particles since Cl is more electronegative in nature than hydrogen

Since Cs has one unpair of electron and Cl has five unpair electron. So, both of elements are favorable for formation of covalent bond.

Properties of Polar Covalent Compound

Hence,correct option is B.

To know more about polar covalent bond, visit here:

https://brainly.com/question/28295508

#SPJ4

The final volume will be larger than 1.12L.

What is ideal gas equation?

The Ideal Gas Law is an equation of state for a gas and is also known as the equation of state of an ideal gas. It states that the product of the pressure, volume, and temperature of an ideal gas is a constant. Mathematically, the Ideal Gas Law can be written as PV = nRT, where P is pressure, V is volume, n is the number of moles of the gas, R is the ideal gas constant, and T is temperature. The constant R is equal to the gas constant, 8.314 J/mol-K, divided by the molar mass of the gas. The Ideal Gas Law is an approximation of the behavior of many gases under many different conditions. It is useful because it relates the variables of pressure, volume, and temperature in a simple mathematical relationship.

PV=nRT

Using ideal gas equation

V2= P1V1/T1 ×T2/P2

In this equation P2 is in denominator so when pressure is decreased V2 increases.

T2 is in numerator so when temperature increases V2 increases.
Overall V2 increases.

For more information about ideal gas equation please visit:

https://brainly.com/question/1056445

#SPJ4

The final gas volume will increase

Define the ideal gas law.

The ideal gas law, also known as the perfect gas law, is a relationship between a gas's pressure P, volume V, and temperature T in the range of low pressures and high temperatures where the gas's molecules move virtually independently of one another.

The ideal gas law (PV = nRT) connects the macroscopic characteristics of ideal gases. An ideal gas is one in which the particles are both non-repellent and non-attractive to one another (have no volume).

PV = nRT

P1V1/T1 = P2V2/T2

From tis .pressure is directly proportional to volume

So if pressure is decreased, volume also decreases

To learn more about ideal gas law use link below:

https://brainly.com/question/27870704

#SPJ4

200 ml of water would be sufficient to dissolve 1.166g of milk of magnesia, mg(oh)2 (s) (58.3 g/mol).

It is a laxative (of the osmotic variety), and its mechanism of action is assumed to include pulling water into the intestines, which aids in causing bowel movement. The symptoms of having too much stomach acid, such as heartburn, an upset stomach, or indigestion, are also treated with this medicine.

MgCl2 +2NaOH→Mg(OH)2+2NaCl

moles of mg(oh)2 in 200ml of 58.3 M solution =  58.3 ∗200/10000.

​=1.166g

according to above equation, for 1 mole of MgCl2

we require 1 mole of NaOH

so, NaOH is a limiting reagent.

To know more about Magnesium visit:-

https://brainly.com/question/1533548

#SPJ4

Chlorine atoms are released when CFCs, which are composed of chlorine, fluorine, and carbon, degrade over time as a result of exposure to UV radiation, and these atoms interact with the ozone molecule to destroy it.

Because they contain hydrogen, HCFCs degrade in the atmosphere more quickly than CFCs do. As a result, HCFCs have less potential to cause global warming as well as ozone depletion. Because they don't contain chlorine, HFCs don't help destroy stratospheric ozone.

All new products don't contain CFCs, which were completely phased out of production in 1995. Your local air conditioning expert can replace very old air conditioners with more modern, environmentally friendly models if they still contain CFCs.

To know more about ozone depletion visit:-

brainly.com/question/14330630

#SPJ4

Question-"A class of widely used chemical coolants known as hydrofluorocarbons (HFCs) have been adopted as replacements for chlorofluorocarbons (CFC) and hydrochlorofluorocarbons (HCFC) in refrigerators and air conditioners. Based on the results of a NASA-derived atmospheric chemistry climateâ model, HFCs cause all except which of the following?"

The answer is O II only.

I: Calculation errors would be considered a valid source of error in a laboratory experiment. If the calculations made during the experiment are incorrect, it can affect the accuracy of the results.

II: Inability to calibrate measuring devices would NOT be considered a valid source of error in a laboratory experiment. Calibrating measuring devices is an essential step in any experiment to ensure that the measurements being taken are accurate. If the measuring devices are not calibrated correctly, the results of the experiment will be invalid.

III: Using the wrong solution for a reaction would be considered a valid source of error in a laboratory experiment. If the wrong solution is used, the results of the experiment may not be accurate.

Therefore, II is the only option that would NOT be considered a valid source of error in a laboratory experiment.

The answer is O II only.

I: Calculation errors would be considered a valid source of error in a laboratory experiment. If the calculations made during the experiment are incorrect, it can affect the accuracy of the results.

II: Inability to calibrate measuring devices would NOT be considered a valid source of error in a laboratory experiment. Calibrating measuring devices is an essential step in any experiment to ensure that the measurements being taken are accurate. If the measuring devices are not calibrated correctly, the results of the experiment will be invalid.

III: Using the wrong solution for a reaction would be considered a valid source of error in a laboratory experiment. If the wrong solution is used, the results of the experiment may not be accurate.

Therefore, II is the only option that would NOT be considered a valid source of error in a laboratory experiment.

The given question is incomplete, hence, can not be answered. Still, adding some relevant information for your reference.

What are formal charges?

Formal charge (FC) is the charge associated with the atoms in a molecule, assuming that the electrons of all chemical bonds are shared equally between atoms, regardless of their relative electronegativities. In determining the optimal Lewis structure (or dominant resonance structure) of a molecule, structures are chosen such that the formal charge of each atom is as close to zero as possible.

In chemistry, the formal charge in the covalent view of a chemical bond is assigned to the atoms in a molecule assuming that all chemical bond electrons are equally shared between atoms, regardless of their relative electronegativities. is the virtual charge that Simply put, the formal charge is the difference between the number of valence electrons of an atom in the neutral free state and the number assigned to that atom in the Lewis structure. In determining the optimal Lewis structure (or dominant resonance structure) of a molecule, structures are chosen such that the formal charge of each atom is as close to zero as possible.

The given question is incomplete, hence, can not be answered. Still, adding some relevant information for your reference.

To know more about Formal charge, visit:

https://brainly.com/question/28446255

#SPJ4

In studying the influence of environmental pH on peroxidase activity, researchers can repeat the experiment without guaiacol, which will reveal the effect of guaiacol on reaction rates.

One of the investigators' proposal to use oxygen gas production to measure reaction rates leads to a change in the dependent variable.

In the first experiment the dependent variable was the volume of guaiacol and in the second experiment the dependent variable will be oxygen production.

Learn more about experiments at https://brainly.com/question/30055326

#SPJ4

Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Thus option C is correct option.

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.

Giant planet atmospheres have layers of clouds and aerosols (tiny liquid droplets) made from different chemicals because different chemicals condense at different temperatures.

Therefore,  option C is correct option.

To learn more about matter, here:

https://brainly.com/question/4562319

#SPJ1

d. Despite the fact that kf and kr will continue to be unequal, rates will become equal due to concentration changes.

When the forwards rate (kf[A]) equals equal reverse rate (kr[B]), the system has reached equilibrium and the concentrations of the reactant and product have stopped changing.

Chemical kinetics governs all chemical reactions, whether they are reversible or not.So, by applying the idea of chemical kinetics, we may better grasp the equilibrium constant K.As illustrated below, let kr be the rate of the reverse reaction and kf be the rate of the forward reaction.

To know more about  kf and kr visit:

https://brainly.com/question/30046975

#SPJ4