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3 years ago

Please help asap,

1 answer:

5 0

10. Capital C and D represent products of chemical reaction, the capital A and B represent reactants, the lower case letter represent coefficients (how many atoms or molecules in chemical reaction).
12. According to Le Chatelier's principle (if the concentration is changed, that will shift the equilibrium to the side that would reduce that change in concentration) the equilibrium shift to the left.
13. According to Le Chatelier's principle the equilibrium shift to the right.
14. According to Le Chatelier's principle (When the reaction is exothermic, heat is included as a product) the equilibrium shift to the right.

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Select the correct answer. Which statement best describes how chemical equations demonstrate conservation of mass? OA The number

timofeeve [1]

Answer: C. The number of atoms of each element is the same on each side of the equation.

Explanation:

The Law of Conservation of Matter shows that it is not possible for matter to either be created nor for it to be destroyed so the number of atoms of each element on the reactant side of the equation must equal the number of atoms in each element on the product side of the equation.

This is why the following equation is incomplete:

H₂ + O₂ ⇒ H₂O

The oxygen atoms are not the same on either side.

Equation will therefor have to be balanced which will make it:

2H₂ + O₂ ⇒ 2H₂O

Notice now that atoms are the same on both sides.

8 0

2 years ago

A naoh (aq) stock solution was created by dissolving 3.88 g naoh in water to create a 100.00 ml solution. what is the concentrat

Bess [88]

0.0381g/mL will be concentration of this solution

The ratio of a solute—a substance that dissolves—to a solvent—a substance that does not dissolve—determines the concentration of a solution in chemistry. C = m/V, where C is the concentration, m is the mass of the solute dissolved, and V is the overall volume of the solution, is the accepted formula.

How to reach the solution?

First find for the density of NaOh which is 2.13 g/cm3

3.88 ÷ 2.13 = 1.82mL

100mL + 1.82mL = 101.82mL

3.88 ÷ 101.82mL = 0.0381g/mL

More about NaOh:

The extremely adaptable chemical sodium hydroxide (NaOH), sometimes referred to as caustic soda or lye, is employed in a range of manufacturing processes. A byproduct of the manufacturing of chlorine is sodium hydroxide. Numerous items that are used on a daily basis, including paper, metal, drain and oven cleansers for industry, soap, and detergents, are made with sodium hydroxide.

Learn more about Naoh here:

brainly.com/question/3366922

#SPJ4

5 0

1 year ago

1. What is the oxidizing agent in the following reaction? CH4 + 2O2 --> CO2 + H2O

Lena [83]

2O2 IS THE OXIDIZING AGENT BECAUSE IT GIVES ALL OTHER ELEMENT OXYGEN

8 0

3 years ago

Read 2 more answers

2 Points

oee [108]

Answer:

C would be the most best choice for this question.

Thank you.

If you have any questions, feel free to leave a comment and I will get back to it as soon as I can.

-The Spectre

Explanation:

7 0

2 years ago

Calculate the relative density of carbon monoxide and carbon dioxide with respect to air.

JulsSmile [24]

Density is proportional to molar mass, assuming pressure and temperature remain constant. Therefore, since CO has a molar mass of 28 and CO2 has a molar mass of 44:
The relative density of CO vs air is 28/29 = 0.9655.
The relative density of CO2 vs air is 44/29 = 1.517.

3 0

3 years ago