Stoichiometry (Mole to Mole and Mass to Mole)

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 balanced equations.

Front

What is the first step in solving a stoichiometry problem?

Back

The first step is to write a balanced chemical equation.

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, ensuring the law of conservation of mass is followed.

Front

How do you determine mole ratios?

Back

Mole ratios are determined from the coefficients of a balanced chemical equation.

Front

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

Back

The mole ratio of N2 to H2 is 1:3.

Front

How many moles of H2 are needed to react with 2 moles of N2?

Back

6 moles of H2 are needed to react with 2 moles of N2.

Front

What is the molar mass of CH4 (methane)?

Back

The molar mass of CH4 is approximately 16.04 g/mol.

Front

How many moles of CO2 are produced from the combustion of 110 g of CH4?

Back

6.85 moles of CO2 are produced from the combustion of 110 g of CH4.

Front

What is the significance of the coefficients in a balanced equation?

Back

Coefficients indicate the number of moles of each substance involved in the reaction.

Front

What is the molar mass of O2?

Back

The molar mass of O2 is approximately 32.00 g/mol.