Chemistry

1. With the aid of the following balanced equation and molar masses (MM), determine the answer for the following question.

2  C7H14   +     21  O2   →   14  CO2     +    14  H2O

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MM            98.2                32.0               44.0                 18.0

How many mol of O2 are required to react with 19.2 g of C7H14?

2.  Balance the following chemical equation by placing a coefficient (including 1) in each answer box that is in front of each reactant and each product.

While coefficients that are equal to 1 are not placed in front of either a reactant or product, you MUST include any coefficient that is equal to 1 in this problem.

H2SO4  +   Re(OH)7  →   Re2(SO4)7  +   H2O

3. Balance the following chemical equation by placing a coefficient (including 1) in each answer box that is in front of each reactant and each product.

While coefficients that are equal to 1 are not placed in front of either a reactant or product, you MUST include any coefficient that is equal to 1 in this problem.

______C9H16_____  +   O2  →______   CO2 +_______   H2O

4.  Balance the following chemical equation by placing a coefficient (including 1) in each answer box that is in front of each reactant and each product.

While coefficients that are equal to 1 are not placed in front of either a reactant or product, you MUST include any coefficient that is equal to 1 in this problem.

________V  +______  O2  → ________  V2O5

5.  With the aid of the following balanced equation and molar masses (MM), determine the answer for the following question.

2  C6H14   +     19  O2   →   12  CO2     +    14  H2O

MM            86.2                32.0               44.0                 18.0

If 0.441 g of C6H14 are reacted with excess O2, what is the theoretical yield (in mL) of CO2. At the temperature and pressure at which this reaction was conducted the density of CO2 is equal to 1.77 g/L.?

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