Stoichiometric Calculations and Dimensional Analysis

Practice Questions

College Chemistry › Stoichiometric Calculations and Dimensional Analysis

Questions

4

1

Consider the unbalanced equation for the combustion of pentane:

$\text{C}_5\text{H}_{12}(g)+\text{O}_2(g)\rightarrow \text{CO}_2(g)+\text{H}_2\text{O}(g)$

How many grams of $\text{O}_2$ is required to react with exactly of $\text{C}_5\text{H}_{12}$ .

2

Consider the following unbalanced reaction:

$\text{K}_2\text{SO}_4(aq)+\text{BaCl}_2(aq)\rightarrow \text{KCl}(aq)+\text{BaSO}_4(s)$

How many grams of $\text{BaSO}_4$ can be produced if $15.0\text{mL}$ of $1.20\text{M}\text{ K}_2\text{SO}_4$ is mixed with $25.0\text{mL}$ of $0.75\text{M BaCl}_2$ ?

3

What is the mass in of a gas with a volume of and a density of $0.76: \frac{g}{mL}$ ?

4

$2H_{2}(g)+ O_{2}(g)\rightarrow 2H_{2}O (g)$

Use the equation shown to determine how many grams of water form when of $H_{2}(g)$ reacts completely with $O_{2}$ at .

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