Front

What is Stoichiometry?

Back

Stoichiometry is the branch of chemistry that deals with the calculation of reactants and products in chemical reactions based on the conservation of mass.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, reflecting the law of conservation of mass.

Front

What is the mole ratio in a chemical reaction?

Back

The mole ratio is the ratio of moles of one substance to the moles of another substance in a balanced chemical equation.

Front

How do you convert grams to moles?

Back

To convert grams to moles, divide the mass of the substance (in grams) by its molar mass (in g/mol).

Front

What is the molar mass of Al (Aluminum)?

Back

The molar mass of Aluminum (Al) is approximately 26.98 g/mol.

Front

Using the equation SiO2 + 3C → SiC + 2CO, how many moles of CO are produced from 3 moles of C?

Back

2 moles of CO are produced from 3 moles of C.

Front

In the reaction 2 Al2O3 → 4 Al + 3 O2, what is the mole ratio of Al to O2?

Back

The mole ratio of Al to O2 is 4:3.

Front

How many moles of O2 are produced from 2 moles of KClO3 in the reaction 2 KClO3 → 2 KCl + 3 O2?

Back

3 moles of O2 are produced from 2 moles of KClO3.

Front

What is the mole ratio of N2 to NH3 in the reaction N2 + 3H2 → 2NH3?

Back

The mole ratio of N2 to NH3 is 1:2.

Front

How do you determine the number of moles of a product formed in a reaction?

Back

Use the mole ratio from the balanced equation to relate the moles of reactants to the moles of products.