The equilibrium constant relates the concentrations of the products and reactants in the chemical equilibrium. To calculate it we can apply the following equation.
For the reaction: aA + bB ---> cC + dD
Equlibrium constant (Ke) will be:
[tex]K=\frac{\lbrack C\rbrack^c\times\lbrack D\rbrack^d}{\lbrack A\rbrack^a\times\lbrack B\rbrack^b}[/tex]The letters in square brackets refer to the concentration raised to the respective coefficient. Now we replace the known values:
[tex]\begin{gathered} K=\text{ }\frac{\lbrack H_2\rbrack^2\times\lbrack S_2\rbrack^1}{\lbrack H_2S\rbrack^2} \\ K=\frac{\lbrack1M\rbrack^2\times\lbrack0.2M\rbrack^1}{\lbrack0.25M\rbrack^2} \\ K=\frac{1M^2\times0.2M}{0.0625M^2} \\ K=3.2M \end{gathered}[/tex]So, the equilibrium constant (Ke) will be 3.2M
Fill in the blanks to complete the tableCompleting the first row.
Each row is independent from the other, so we can use the same method for each one.
Le'ts give a variable for each column:
- S: Symbol
- z: Z (Atomic number)
- a: A (Mass number)
- p: No of Protons
- e: No of Electrons
- n: No of Neitrons
- c: Charge
In the symbol column, the right supercript is the charge, so since the Symbol is:
[tex]S=Mg^{2+}[/tex]The charge is 2+. We write as 2+, but in math we would write as +2, they are the same, but in different notations.
[tex]c=2+=+2[/tex]The atomic number and the symbol are always unique, so each element has always the same atomic number and the other way around too.
From a periodic table, we can see which Element corresponds to which atomic number Z.
On a periodic table, we can see that the atomic number of Mg is 12, so:
[tex]z=12[/tex]Also, the atomic number and the number of protons is always the same:
[tex]\begin{gathered} p=z \\ p=12 \end{gathered}[/tex]The mass number, a, is alwais the number of protons plus the number of neutrons:
[tex]a=p+n[/tex]Since we know that the mass number is 25 in this case, we can calculate the number of protons:
[tex]\begin{gathered} a=p+n \\ 25=12+n \\ n=25-12 \\ n=13 \end{gathered}[/tex]So it checks out with the number on the table.
Each proton has a charge of 1+ and each electron has a charge of 1-. In Math terms, we can say that each proton counts as +1 and each electron counts as -1.
Thus, the charge is the number of protons minus the number o electrons:
[tex]c=p-e[/tex]Since the charge is 2+ and there are 12 protons, we can say:
[tex]\begin{gathered} 2=12-e \\ e=12-2 \\ e=10 \end{gathered}[/tex]So, there are 10 electrons.
Putting altogether, we have:
[tex]\begin{gathered} S=Mg^{2+} \\ z=12 \\ a=25 \\ p=12 \\ e=10 \\ n=13 \\ c=2+ \end{gathered}[/tex]And, by the names:
Symbol: Mg²⁺
Z: 12
A: 25
No. of Protons: 12
No. of Electrons: 10
No. of Neutrons: 13
Charge: 2+
Strontium metal and aqueous HCIreact to give hydrogen gas andaqueous strontium chloride. Writethe balanced chemical equation usingthe correct chemical formulas for thereactants and products and identifythe reaction type.
The metal Strontium is symbolized by Sr, and since it is a metal its oxidation number is 0, so no charge.
In this reaction, the Sr will become 2+, so, since Cl is 1-, the proportion is 1 Sr to 2 Cl, so the unbalanced reaction is:
[tex]Sr+HCl\to H_2+SrCl_2[/tex]To balance it, we need to add a coefficient of 2 on HCl, so we have 2 H on both sides and 2 Cl on both sides.
The Sr is and continue balanced.
So, the balanced reaction is:
[tex]Sr+2HCl\to H_2+SrCl_2[/tex]As we can see, the left part has Sr alone and H with Cl, while on the right side this changes, H is alone and Sr is with Cl. This means that Cl was displaced from H to Sr, so this is a single displacement reaction.
4. 10.0 trillion DNA molecules is equal to how many moles of DNA?
1.66 × 10–11 moles
6.02 × 1010 moles
6.02 × 1036 moles
1.66 × 1010 moles
10.0 trillion DNA molecules is equal to 1.66 × 10–11 moles of DNA.
The correct option is A.
What is DNA and its function?The directions needed for a creature to grow, endure, and reproduce are encoded in its DNA. DNA sequences must be converted into messages that can be utilized to create proteins, that are the complex molecules that carry out the majority of the work in our bodies, in order to perform these activities.
Where is DNA in the body?The DNA of a person can be found in almost all of their cells. The majority of DNA is found in the cell nucleus (where it is known as nuclear DNA), but there is also a tiny quantity of DNA in the mitochondrial .
Briefing:1 trillion = 10¹² DNA molecules
6.022 × 10²³ molecule = 1 mole
10¹² DNA molecules = 1 / 6.022 × 10²³ × 10¹²
= 1.66 × 10–11 moles.
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The complete question is -
10.0 trillion DNA molecules is equal to how many moles of DNA?
A-1.66 × 10–11 moles
B-6.02 × 1010 moles
C-6.02 × 1036 moles
D-1.66 × 1010 moles
Two descriptions for a sub-atomic particle are listed below:
Description 1: Can electrically attract or repel other sub-atomic particles
Description 2: Has a charge
Which sub-atomic particle or particles fit these descriptions?
a
Electrons only
b
Neutrons only
c
Electrons and protons
d
Protons and neutrons
The descriptions that the sub-atomic particles can electrically attract or repel other sub-atomic particles and has a charge best suits for electrons and protons.
What is sub-atomic particle?Sub-atomic particles are the basic constituents of an atom. Electrons, protons and neutrons are called subatomic particles.
Electrons possess negative charge and protons have positive charge. Thus electrons attracts a proton and vice versa. Neutron is neutral and shows no attraction or repulsion.
Hence, The description that a sub-atomic particle having charge and electrically attract or repel other sub-atomic particle fit for both electrons and protons.
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There are protons, neutrons, and electrons, three types of subatomic particles. Protons and electrons, two of the subatomic particles, each have an electrical charge of one or the other. On the other hand, neutrons lack a charge.
What do you mean by electric charge?The fundamental feature of matter known as electric charge, which is carried by some elementary particles, determines how the particles are affected by an electric or magnetic field.
Protons are positively charged particles that are found inside the atom's nucleus. Neutrons are found inside the atom's nucleus and are neutral particles.
Electrons are negatively charged particles that surround the nucleus by unclear paths.
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3.Two molecules of mercury oxide decompose into 2 molecules of mercury and 1 molecule of oxygen gas. Which of the following equations correctly describes this reaction?Select one:a. Ab. Bc. Cd. D
Answer
Explanation
If two molecules of mercury oxide decompose into 2 molecules of mercury and 1 molecule of oxygen gas, then the equation for the reaction is shown below
[tex]2HgO(s)\rightarrow2Hg(l)+O_2(g)[/tex]What is the hydrate formula for something that is 0.0243 mol Bal2 and 0.75 mol H2O?
Answer:
[tex]\text{BaI}_2.30H_2O[/tex]
Explanation:
Here, we want to get the hydrate formula
To get the hydrate formula, we need to get the number of molecules of water
Now, to get this, we have to divide the number of moles of water by the number of moles of the anhydrous solid
The number of moles of water is given as 0.75 while that of the anhydrous solid is 0.0243
Mathematically, we have it that:
[tex]\frac{0.75}{0.0243}\text{ =}30[/tex]The hydrate formula is thus:
[tex]\text{BaI}_2.30H_2O[/tex]How much energy (Joules) is required to change 49.75 grams of liquid water from 95 Celsius to 105 Celsius?
The energy in Joules required to change 49.75 grams of liquid water from 95 Celsius to 105 Celsius is 2082.54J.
How to calculate energy?Energy is the ability to do work. The energy needed to heat a substance can be calculated using the following formula:
Q = mc∆T
Where;
Q = quantity of heat energy absorbed or releasedm = mass of substancec = specific heat capacity of water = 4.186 J/g°C∆T = change in temperatureAccording to this question, 49.75 grams of liquid water needs to be changed from 95 Celsius to 105 Celsius. The energy needed can be calculated as follows:
Q = 49.75 × 4.186 × (105 - 95)
Q = 2082.54J
Therefore, 2082.54J is the energy required to change the liquid water.
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Assume that a given solution contains Ag+ or Ba2+ or a mixture of both. A reasonable method for doing a qualitative analysis on this solution might be sketched out as follows : picture below
What is the precipitate formed at X in the above scheme?
b. What is the identity of cation at Y in the above scheme?
c. What are two other solutions that could be used in the above scheme rather than Na2SO4? Explain.
a) The X is BaSO₄, b) The cation is Ag⁺ ions, c) another way to separate is by adding NaCl or NaSCN
It is given that the solution contains Ag⁺ and Ba²⁺ ions. In addition to Na₂SO₄, Ba²⁺ ions get precipitated to give BaSO₄ leaving the cation, Ag⁺.
The reaction would be,
Ag⁺ + Ba²⁺ ------Na₂SO₄---------> BaSO₄ + Ag+
Therefore,
a) The precipitate X that is formed would be BaSO₄ in the above scheme.
b) The cation that is left at Y is Ag⁺.
c) This reaction can also be carried out using NaCl and NaSCN. By using NaCl we could obtain, BaCl₂ and by using NaSCN we could get Ba(SCN)₂. Here both precipitates are soluble. The respective reactions are,
Ag⁺ + Ba²⁺ ------NaCl---------> BaCl₂ + Ag+
Ag⁺ + Ba²⁺ ------NaSCN---------> Ba(SCN)₂ + Ag+
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Ionic and covalent bonds help arrange atoms into unique structures for proteins like hemoglobin. Why is this necessary?
Responses
The structure of the protein allows it to carry out whatever function is needed the most.
The structure of the protein allows it to carry out whatever function is needed the most.
The bonds help hold the protein together but are unrelated to the function.
The bonds help hold the protein together but are unrelated to the function.
The ionic bonds alone in a protein help determine its function.
The ionic bonds alone in a protein help determine its function.
The structure of a protein allows it to carry out its unique function.
The structure of a protein allows it to carry out its unique function.
The reason why the Ionic and covalent bonds help arrange atoms into unique structures for proteins like hemoglobin is that the structure of a protein allows it to carry out its unique function.
What is the covalent bond?The covalent bond is the kind of bond that exists between two atoms in which the electrons between the two atoms are shared. The electrons cloud of the bond lies between the two atoms. For the ionic bond, there is a transfer of the electrons from one atom to another. We ought to note that the transfer is often from the metal to the non metal.
On the other hand, it should be noted that there are various kinds of bonding that are important to be able to keep the structure and the function of the protein. Aside from the covalent bonds that holds the atoms together, the ionic bonds could also be involved in the dipolar interactions that are responsible for the secondary structure of the protein.
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B. The structure of a protein allows it to carry out its unique function.
ur welcum
consider the reaction 2clf3+2nh3=n2+6hf+cl2 calculate hf for clf3 .
We can obtain the heat of formation required for the chlorine tri fluorde as -1513 kJ.
What is the enthalpy?Looking at the fact that a chemical reaction often involves a heat change we could define the enthalpy change which is the heat change of the reaction as the energy that was lost or gained in course of a reaction.
To obtain the heat of formation of chlorine tri fluorde, let us designate it as x ;
Using the formula;
Sum of enthalpy of formation of products - Sum of enthalpy of formation of reactants
-1196 =(0 + 271 + 0) - (x + (- 46))
-1196 = 271 - x + 46
-1196 = 317 - x
x = -1196 - 317
x = -1513 kJ
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Missing parts;
Consider the reaction 2ClF3 (g) + 2NH3 (g) → 6HF (g) + N2 (g) + Cl2 (g) △H-_1196 kJ Given the following enthalpies of formation, calculate AHf for CIF3 (9) NH3 (g)- 46 kJ/mol HF 9)271 kJ/mol kJ
what is the final pressure (in atm) of 5.25 L gas initially at 534 mmHg and 22 degrees celsius that is compressed to a final volume of 2.75 L at a new temperature of 15 degrees celsius?
The final pressure of 5.25L gas initially at 534 mmHg and 22 degrees celsius that is compressed to a final volume of 2.75 L is 1.31atm.
How to calculate pressure?The combined gas law states that the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant.
The pressure of a gas can be calculated by using the combined gas law equation as follows:
P₁V₁/T₁ = P₂V₂/T₂
Where;
P₁ = initial pressure (atm)V₁ = initial volume (L)T₁ = initial temperature (K)P₂ = final pressure (atm)V₂ = final volume (L)T₂ = final temperature (K)According to this question, a 5.25 L gas initially at 534 mmHg and 22 degrees celsius is compressed to a final volume of 2.75 L at a new temperature of 15 degrees celsius. The final pressure can be calculated as follows;
22°C = 295K15°C = 288K534 mmHg = 0.703 atm0.703 × 5.25/295 = P₂ × 2.75/288
0.0125 = 0.00955P
P₂ = 1.31atm
Therefore, 1.31 atm is the final pressure of the gas compressed to a lower volume of 2.75L.
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Using the glucose data in Document A and the balanced equation for photosynthesis inDocument B, calculate how much oxygen the plant made in one day.
The plant made in one day 0.54 moles of oxygen.
From the balanced equation for photosynthesis, we know that 6 moles of oxygen are produced when 1 mole of glucose is produced at the same time.
So, to calculate the amount of oxygen that a plant made in one day when it produced 0.090 moles of glucose, we can use a mathematical Rule of Three:
[tex]\begin{gathered} 1\text{mol Glucose}-6\text{mol Oxygen} \\ 0.090\text{mol Glucose-x=}\frac{0.090\text{mol Glucose}\cdot6\text{mol Oxygen}}{1\text{mol Glucose}} \\ x=0.54\text{mol Oxygen} \end{gathered}[/tex]Finally, the plant made in one day 0.54 moles of oxygen.
How many liters of solution will be produced when diluting 1.65 L of a 0.432 M KI solution to 0.212 M KI?
All questions where they ask you about concentration or volume of a solution prepared with another solution can be solved using the following equation:
[tex]C_1V_1=C_2V_2[/tex]Where C1 is the concentration of the first solution, V1 is the volume of the first solution, C2 is the concentration of the second solution and V2 is the volume of the second solution. You only need to be careful to use the rigth units.
This particular question ask for the Volume of the second solution, V2. Then we need to solve for V2 in the previous equation:
[tex]V_2=\frac{C_1V_1}{C_2}=\frac{0.432\text{ M}\times1.65L}{0.212M}=3.36L[/tex]Ca(OH)2 is added to a large beaker of water. How is the solution different from the original water?
The solution turns blue litmus to red.
The solution turns phenolphthalein pink.
The solution has more hydrogen ions.
The solution has fewer hydroxide ions.
I know its not B
The solution is different from the original water being that the solution turns phenolphthalein pink (option B).
What is a base?A base is any of a class of generally water-soluble compounds, having bitter taste, that turn red litmus blue, and react with acids to form salts.
A base is known to contain excessive amounts of hydroxide ions (OH-), which it releases in an aqueous solution.
Phenolphthalein is an indicator solution that appears colourless, however, when it is exposed to alkaline solution it turns pink.
This suggests that a basic solution turns phenolphthalein solution pink.
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Which analogy best describes theories?
Theories are like rocks because they can change but not easilly.
Theories are like tides because they frequently go back and forth.
Theories are like time because they are eternal and never change.
Theories are like clay because they can be molded to fit changing opinions.
The analogy that best describes theories is that theories are like clay because they can be molded to fit changing opinions.
A theory is a thorough explanation of a scientific phenomenon that incorporates laws, hypotheses, and facts. For example, the gravitational field hypothesis explains why fruits fall from trees and astronauts float in space. A theory can be related to a clay as it can be moulded as per the observations. The more observations a theory anticipates, the more tests it passes, and the more facts it explains, the longer its core premises hold true.
A theory should be consistent with new data. If not, the theory is changed or abandoned. The more observations a theory anticipates, the more tests it passes, and the more facts it explains, the longer its core premises hold true.
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What stress would shift the equilibrium position of the following system to the left? N2O3(g) ⇌ NO(g) + NO2(g); ΔH is negativea.The forward reaction is exothermic.b.The backward reaction has a negative net enthalpy.c.The colorless gas has a higher enthalpy than the brown gas.d.The equilibrium between the two forms of the gas is disturbed at high temperatures.
Answer
Explanation
N2O3(g) ⇌ NO(g) + NO2(g); ΔH is negative
The reaction is exothermic (ΔH is negative), an increase in the temperature will force the equilibrium to the left, causing the system to absorb heat and thus partially offset the rise in temperature.
Therefore, the correct answer is:
d. The equilibrium between the two forms of the gas is disturbed at high temperatures.
1. 10.0 grams of water in the form of a solid has a temperature of 0.0 °C. This cube of
ice is placed in a room with a temperature of 25.0 °C. The ice starts melting to form a
puddle of water. The initial 10.0 grams of water is what kind of property?
4
O
O
O
personal
intensive
extensive
chemical
The initial 10.0 grams of water is a kind of intensive property.
What do you mean by intensive properties?
Intensive properties are those properties which do not depend upon the amount of the given substance. For example Temperature and pressure.
Generally, grams are used to represent concentrations. Therefore, always consider extensive. However, in the given question, the concentration is specified i.e. means fixed. So, the 10.0 grams of water become intensive in the given conditions.
Hence, the answer is an intensive property.
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Which equations represent the conservation of matter? (choose 2)
Responses
A A + B → ABA + B , →, AB
B A + B → CA + B , →, C
C A + B + C → BC + DA + B + C , →, BC + D
D AB + CD → AC + BBAB + CD , →, AC + BB
E AB + C → AC + B
Answer:
AA+b Ac+b
Explanation:
Identify the species oxidized, the species reduced, the oxidizing agent and the reducing agent in the following electron-transfer reaction.
Mn(s) + Pb2+(aq) Mn2+(aq) + Pb(s)
A change in the substrate's oxidation state occurs during redox reactions. Oxidation is the process of losing electrons or increasing an element's oxidation state.
Gaining electrons or lowering the oxidation state of an element or its constituent atoms are both examples of reduction.
An oxidation-reduction (redox) reaction is a chemical process in which two compounds exchange electrons. Any chemical process in which a molecule, atom, or ion suffers a change in its oxidation number as a result of acquiring or losing an electron is known as an oxidation-reduction reaction.
An oxidizing agent is a substance that "accepts" or "receives" an electron from a reducing agent in a redox chemical process. Therefore, an oxidant is any chemical that oxidizes another substance.
An electron is "donated" to an electron acceptor by a chemical species known as a reducing agent. Chemicals that are often used as reducing agents include the Earth metals, formic acid, oxalic acid, and sulfite compounds.
Pb gets oxidized.
Manganese (Mn) gets reduced.
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2.70 mL of 4.00 M KOH is diluted to a final volume of 100.0 mL. What is the resulting concentration?
Answer: 0.108
Explanation:
use v1s1 = v2s2
here v1 = 2.7ml s1 = 4 M v2 = 100ml s2=?
How many seconds are in72 milliseconds?Give your answer in standard form.Ent
1) Convert milliseconds to seconds.
1 s = 1000 ms
[tex]s=72\text{ }ms*\frac{1\text{ }s}{1000\text{ }ms}=0.072\text{ }s[/tex]72 ms is equal to 0.072 s.
Which tasks would Power, Structural, and Technical Systems employees most likely perform?
A. fix tractors, reassemble engines, operate bull dozers
B.package steaks, use laboratory equipment, know the standards for food storage facilities
C.track supplies, drive equipment, give advice about farm function
D.operate machinery in mines, record data on tree sizes, enforce rules and regulations
The tasks would Power, Structural, and Technical Systems employees most likely perform are option B. package steaks, use laboratory equipment, and know the standards for food storage facilities.
A technological machine is fixed of interconnected components that have been designed to satisfy a selected characteristic without, in addition, human design input. Technological structures transform, store, transport, or manage substances, energy, and/or statistics for a particular cause.
Individuals who paint in the electricity, Structural, and Technical structures pathway observe an understanding of engineering, hydraulics, pneumatics, electronics, energy, systems, and controls in the field of agriculture. They design agricultural structures in addition to equipment and gadget.
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REACTION: C5H12 + 8O2 5CO2 + 6H2O When 25.5 grams of C5H12 are consumed in this reaction what mass of CO2 can be produced in grams?
In order to answer this question we will need the properly balanced reaction, which the question already gave us:
C5H12 + 8 O2 -> 5 CO2 + 6 H2O
Then we need to focus on the compounds that the question is asking, which are C5H12 and 5 CO2, from the reaction we can also identify the molar ratio between both molecules, 1:5, that means that for every mole of C5H12, we will end up with 5 moles of CO2
Now let's find out how many moles of C5H12 are in 25.5 grams of it, we will use its molar mass to find the answer, molar mass is 72.15 g/mol
72.15 g = 1 mol
25.5 g = x moles
x = 0.35 moles of C5H12
Now we have 0.35 moles of C5H12, we know that molar ratio is 1:5, now let's see how many moles of CO2 we will have
1 C5H12 = 5 CO2
0.35 C5H12 = x CO2
x = 1.75 moles of CO2
And now we will do a similar step using CO2 molar mass in order to find the final mass, molar mass for CO2 is 44.01 g/mol
44.01 g = 1 mol
x grams = 1.75 moles
x = 77.02 grams of CO2
A 4kg object is pushed 1 meter in 1 second. How many joules were consumed to move the object?
For the thing to move, 2 joules were used.
Energy and an example are what?There are numerous shapes that energy can take. Examples of these energies include gravitational energy, mechanical energy, electrical energy, sound energy, chemical energy, nuclear or atomic energy, light energy, heat energy, and so on. Each form has the capacity to alter or change into the other forms.
Why is energy so important?Energy is a major factor in our daily lives because it is a fundamental need for humans. You need energy to move, rise from bed, or even merely to go down the road. Energy not only heats but also cools our man-made structures.
formula, joules = 1/2*kilogram*{[tex]\frac{meter}{sec}[/tex]}^2
joule = [tex]\frac{1}{2}[/tex]*4*1 = 2 joule
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Please help me please please
Your system could not cool as effectively as it should due to refrigerant leakage. Your home cannot reach the target temperature due to your air conditioning system. However, it may also result in higher monthly energy costs.
What is the temperature called?Temperature is a unit used to represent hotness or coolness on any of a number of scales, including Celsius and Fahrenheit. According to temperature, heat energy will naturally move from a hotter (body with a high temp) to a colder (body with such a lower temperature) (one at a lower temperature)
What are the 4 types of temperature?The most widely used method of measuring temperature in the United States and several Caribbean regions is the Fahrenheit scale.Celsius Scale.Kelvin Scale.Rankine ScaleTo know more about Temperature visit:
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paragraph explain how to draw a covalent bonds
Covalent bonds are those bonds in which the atoms between which the bond is present share electrons. Each element retains its electrons but shares with the element with whom it creates the bond.
To graph a covalent bond there are different structures, for example the Lewis structure, which indicates the electrons in the form of points, then the number of points of the atom will be the valence electrons that the element has. The symbol of the element is enclosed in a circle and the electrons are drawn on the circle. The electrons that are shared overlap between the circles of both elements. In the following example you can see what I just described:
I have pressure of 65 kPa and starting temperature of 25°C. If I raise the temperature to 167°C, what is the new pressure? (Equation: K= 273 +°CO 90 KPaO 100 kPaO 96 kPaO 97 kPa
96kPa. Option C is correct
Explanations:
According to Gay Lussac's law, the pressure of a given mass of gas is directly proportional to the temperature provided that the volume is constant. Mathematically:
[tex]\begin{gathered} P\alpha T \\ P=kT \\ k=\frac{P_1}{T_1}=\frac{P_2}{T_2} \end{gathered}[/tex]Substituting the given parameters to determine the new pressure P2
[tex]\begin{gathered} P_2=\frac{P_1T_2}{T_1} \\ P_2=\frac{65\times(167+273)}{(25+273)} \\ P_2=\frac{65\times440}{298} \\ P_2=\frac{28600}{298}=95.97kPa \\ P_2\approx96kPa \end{gathered}[/tex]Therefore the new pressure is 96kPa
i need help with chemistry
0.966 ml concentrated acid must you add to obtain a total volume of 50.0 ml of the dilute solution.
What is meant by dilute solution?A diluted solution is one that has a low solute content. A concentrated solution is one that contains a lot of the solute. The concentrated solution can be created by adding more solute to the dilute solution.
Briefing:Considering that the moles of Nitric acid remain unchanged during the dilution process:
[tex]n_{H I}=n_{H I}[/tex]
Apply the following equality in terms of molarity
V[tex]_1[/tex]M[tex]_1[/tex] = V[tex]_2[/tex]M[tex]_2[/tex]
The subscript 1 accounts for the solution before the dilution and 2 after the dilution, therefore, the required volume of 6.00 M acid is:
V[tex]_1[/tex]= V[tex]_2[/tex]M[tex]_2[/tex]/M[tex]_1[/tex]
= 50.0ml * 0.116 M/6.00 M
= 0.966 ml.
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The complete question is -
You wish to make a 0.116 M nitric acid solution from a stock solution of 6.00 M nitric acid. How much concentrated acid must you add to obtain a total volume of 50.0 ml of the dilute solution ?
Calculate the grams of lead (III) iodide that can be produced from 5.00 moles of potassium iodideI picked A but I’m not sure if it’s correct
Explanation:
The question gives us the following reaction:
Pb(NO3)2 + 2 KI ---> PbI2 + 2KNO3
The equation tells us that 2 moles of potassium iodide (KI) produce 1 mole of lead(II) iodide (PbI2).
So:
2 moles KI ---- 1 mole PbI2
5 moles KI ---- x moles
x = 2.5 moles
Now let's transform 2.5 moles of PbI2 into grams:
m = n*MM
MM of PbI2 = 461 g/mol
m = 2.5*461 = 1,152.5 g
Answer: alternative "D" 1.15 x 10^3 g
In the reaction between CH3CH2CH2CH2Cl and CH3ONa, the organic product is
The product of the reaction as it has been shown above is butoxymethane.
What is a chemical reaction?A chemical reaction is an interaction that takes place between two or more chemical substances to yield a product (s). We should note that the reactants are written at the left hand side of the reaction equation while the products are written at the right hand side of the reaction equation. This is how we show reaction on paper.
Having said this, the reaction that have been shown in the question would occur by an SN2 synchronous mechanism to yield butoxy methane product.
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