Molar Mass and Molar Conversions Flashcard

Front

What is molar mass?

Back

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It is calculated by summing the atomic masses of all atoms in a molecule.

Front

How do you calculate the molar mass of a compound?

Back

To calculate the molar mass, identify the number of each type of atom in the compound, multiply by the atomic mass of each element, and sum the total.

Front

What is the molar mass of Calcium Nitrate, Ca(NO3)2?

Back

164.09 g/mol.

Front

What is the molar mass of Water, H2O?

Back

18.02 g/mol.

Front

What is the molar mass of Carbon Dioxide, CO2?

Back

44.01 g/mol.

Front

What is the molar mass of Methane, CH4?

Back

16.04 g/mol.

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

Convert 25 grams of H2O to moles.

Back

1.39 moles.

Front

What is the formula for calculating moles from mass?

Back

Moles = Mass (g) / Molar Mass (g/mol).

Front

What is the significance of molar mass in chemical reactions?

Back

Molar mass is crucial for stoichiometry, allowing chemists to calculate the amounts of reactants and products in a chemical reaction.