Grams <--> Moles

Front

What is the relationship between grams and moles?

Back

Grams and moles are related through the molar mass of a substance. Moles = grams / molar mass.

Front

Define molar mass.

Back

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (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.

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 molar mass of O₂?

Back

The molar mass of O₂ (oxygen gas) is approximately 32 g/mol.

Front

What is the balanced equation for the decomposition of sodium chlorate (NaClO₃)?

Back

2 NaClO₃ (s) → 2 NaCl (s) + 3 O₂ (g).

Front

How many grams of O₂ are produced from 12.00 moles of NaClO₃?

Back

576 g of O₂ are produced.

Front

What is the balanced equation for the combustion of diborane (B₂H₆)?

Back

B₂H₆ + 3 O₂ → 2 HBO₂ + 2 H₂O.

Front

How many moles of O₂ are needed to burn 36.1 g of B₂H₆?

Back

3.92 mol of O₂ are needed.

Front

What is the balanced equation for the reaction of calcium carbide (CaC₂) with water?

Back

CaC₂ (s) + 2 H₂O (l) → C₂H₂ (g) + Ca(OH)₂ (aq).