Stoichiometry Mass to Mass

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 does a balanced chemical equation represent?

Back

A balanced chemical equation represents the conservation of mass, showing that the number of atoms of each element is the same on both sides of the equation.

Front

How do you determine the mole ratio from a balanced equation?

Back

The mole ratio is determined by the coefficients in front of the reactants and products in a balanced chemical equation.

Front

What is the mole ratio of Mg to Fe in the reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe?

Back

The mole ratio of Mg to Fe is 3:2.

Front

How many moles of hydrogen are needed to react with 2 moles of nitrogen in the reaction: N2 + 3H2 → 2NH3?

Back

6 moles of hydrogen are needed.

Front

What is the mole ratio of MgO to Fe in the reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe?

Back

The mole ratio of MgO to Fe is 3:2.

Front

In the reaction 2H2 + O2 → 2H2O, how many moles of water can be produced from 8 moles of H2?

Back

8 moles of water can be produced.

Front

What is the molar mass of KCl?

Back

The molar mass of KCl is 74.55 g/mol.

Front

What is the molar mass of KBr?

Back

The molar mass of KBr is 119.00 g/mol.

Front

How do you convert grams of a substance to moles?

Back

To convert grams to moles, divide the mass of the substance by its molar mass.