Stoichometry Homework #1

In the reaction represented by the equation N2 + 3H2 ---> 2NH3, what is the mole ratio of nitrogen to ammonia?

1:2

When the formula equation Fe2O3 + Cl2 --> FeCl3 + O2 is correctly balanced the coefficient of Fe in Fe2O3 is?

2

Which coefficients correctly balance the formula Na3PO4 + Sr(OH)2 --> NaOH + Sr3(PO4)2 ?

2, 3, 6, 1

For the reaction represented by the equation C + 2H2 --> CH4, how many moles of hydrogen are required to produce 10 mol of methane, CH4?

20 mol

In the reaction represented by the equation C + 2H2 ---> CH4, what is the mole ratio of hydrogen to methane?

2:1

The Haber process for producing ammonia commercially is represented by the equation N2(g) + 3H2(g) ---> 2NH3(g). To completely convert 9.0 mol hydrogen gas to ammonia gas, how many moles of nitrogen gas are required?

3.0 mol

In the equation 2KClO3 -----> 2KCl + 3O2, how many moles of oxygen are produced when 3.0 mol of KClO3 decompose completely?

4.5 mol

In the reaction represented by the equation 2Al2O3 ----> 4Al + 3O2, what is the mole ratio of aluminum to oxygen?

4:3

To balance a chemical equation, it may be necessary to adjust the

coefficients.

The units of molar mass are

g/mol.

A balanced chemical equation allows one to determine the

mole ratio of any two substances in the reaction.

Each of the four types of reaction stoichiometry problems requires using a

mole ratio.

The coefficients in a chemical equation represent the

relative numbers of moles of reactants and products.