M5 Review Stoichiometry (Chem)

Front

What is a mole in chemistry?

Back

A mole is a unit of measurement used to express amounts of a chemical substance, defined as exactly 6.022 x 10^23 particles (atoms, molecules, ions, etc.).

Front

How many molecules are in one mole of a substance?

Back

There are 6.022 x 10^23 molecules in one mole of a substance.

Front

What is the molar mass of glucose (C6H12O6)?

Back

The molar mass of glucose is 180 g/mol.

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

Given 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

How do you calculate the number of moles from grams?

Back

Number of moles = mass (g) / molar mass (g/mol).

Front

What is the balanced equation for the combustion of propane (C3H8)?

Back

C3H8 + 5 O2 → 3 CO2 + 4 H2O.

Front

How many moles of Fe can be produced from 6 moles of H2 in the reaction: Fe2O3 + 3 H2 → 2 Fe + 3 H2O?

Back

4 moles of Fe can be produced from 6 moles of H2.

Front

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

Back

Coefficients indicate the number of moles of each reactant and product involved in the reaction.

Front

What is stoichiometry?

Back

Stoichiometry is the calculation of reactants and products in chemical reactions based on the balanced equation.