Stoichiometry Flashcard

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 conservation of mass.

Front

What is the first step in solving stoichiometry problems?

Back

Balance the 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, reflecting the law of conservation of mass.

Front

How do you find the molar mass of a compound?

Back

To find the molar mass, sum the atomic masses of all the atoms in the compound's formula.

Front

What is the mole ratio in a balanced equation?

Back

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

Front

If 2H₂ + O₂ → 2H₂O, how many moles of water are produced from 4 moles of H₂?

Back

4 moles of water are produced.

Front

What is the molar mass of NaCl?

Back

The molar mass of NaCl is approximately 58.44 g/mol.

Front

How many grams are in 7.8 moles of NaCl?

Back

452 grams.

Front

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

Back

The ratio is 3 mol MgO / 2 mol Fe.

Front

What does it mean to convert moles to grams?

Back

Converting moles to grams involves multiplying the number of moles by the molar mass of the substance.