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 mole ratio in a chemical reaction?

Back

The mole ratio is the ratio of the amounts in moles of any two compounds involved in a chemical reaction, derived from the coefficients of the balanced equation.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products to ensure that the number of atoms for each element is the same on both sides of the equation.

Front

What is the molar mass of NaCl?

Back

The molar mass of NaCl (sodium chloride) is approximately 58.44 g/mol.

Front

How do you convert moles to grams?

Back

To convert moles to grams, multiply the number of moles by the molar mass of the substance.

Front

What is the balanced equation for the combustion of methane (CH4)?

Back

The balanced equation is: CH4 + 2 O2 → CO2 + 2 H2O.

Front

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

Back

Coefficients indicate the relative number of moles of each substance involved in the reaction.

Front

How many moles of water are produced from 2 moles of hydrogen gas?

Back

According to the reaction 2 H2 + O2 → 2 H2O, 2 moles of hydrogen produce 2 moles of water.

Front

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

Back

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

Front

How do you determine the limiting reactant in a chemical reaction?

Back

The limiting reactant is the substance that is completely consumed first, limiting the amount of product formed.