Stoichiometry-moles/moles and mass/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 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 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 KClO3?

Back

The molar mass of KClO3 is approximately 122.55 g/mol.

Front

In the reaction 2 KClO3 → 2 KCl + 3 O2, how many moles of O2 are produced from 2 moles of KClO3?

Back

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

Front

What is the mole ratio of H2 to H2O in the reaction 2 H2 + O2 → 2 H2O?

Back

The mole ratio of H2 to H2O is 1:1.

Front

How many grams of O2 are needed to react with 8 moles of H2 in the reaction 2 H2 + O2 → 2 H2O?

Back

16 grams of O2 are needed to react with 8 moles of H2.

Front

What is the first step in solving a stoichiometry problem?

Back

The first step is to write a balanced equation for the reaction.

Front

True or False: You must convert grams to moles to perform stoichiometry calculations.

Back

True.

Front

What is the mole ratio of B2H6 to O2 in the reaction B2H6 + 3 O2 → 2 HBO2 + 2 H2O?

Back

The mole ratio of B2H6 to O2 is 1:3.