Gram to Gram Problem

Front

What is the definition of molar mass?

Back

The number of grams per one mole of a substance.

Front

What are the units of molar mass?

Back

grams / mol

Front

Given the unbalanced equation: Na2O + H2O → ? How many grams of NaOH is produced from 120 grams of Na2O?

Back

155 g NaOH

Front

Which of the following is a properly balanced equation? KClO3 → KCl + O2, 2KClO3 → 2KCl + 3O2, 2KClO3 → KCl + 3O2, None of these are balanced

Back

2KClO3 → 2KCl + 3O2

Front

What is the molar mass of KCl?

Back

75 g/mol

Front

What is the first step in solving a gram to gram problem?

Back

Identify the balanced chemical equation.

Front

How do you convert grams of a substance to moles?

Back

Use the formula: moles = grams / molar mass.

Front

What is the purpose of balancing a chemical equation?

Back

To ensure the law of conservation of mass is followed.

Front

What is the relationship between moles and grams?

Back

Moles are a measure of quantity, while grams measure mass.

Front

What is the molar mass of NaOH?

Back

Approximately 40 g/mol.