Conversions between Grams and Moles

Convert 25 grams of NaCl to moles.

• 0.75

• 0.312

• 0.625

• 0.428

Convert 3 moles of CO2 to grams.

• 44.01 grams

• 132.03 grams

• 66.02 grams

• 198.06 grams

What is the molar mass of H2O?

• 20.015 g/mol

• 18.015 g/mol

• 22.990 g/mol

• 16.043 g/mol

How many moles are present in 64 grams of O2?

• 2 moles

• 4 moles

• 3 moles

• 1 mole

Calculate the mass of 2 moles of CaCO3.

• 100.09 g

• 150.27 g

• 250.36 g

• 200.18 g

If you have 0.5 moles of NaOH, how many grams is that?

• 25 grams

• 15 grams

• 10 grams

• 20 grams

What is the molar mass of CH4?

• 16.04 g/mol

• 14.01 g/mol

• 20.03 g/mol

• 18.02 g/mol

Convert 10 grams of Fe2O3 to moles.

• 0.127 mol

• 0.0627 mol

• 0.035 mol

• 0.250 mol

How many grams are in 0.2 moles of HCl?

• 7.292 grams

• 12.345 grams

• 0.5 grams

• 3.141 grams

If you have 4 moles of NH3, what is the mass in grams?

• 68.12 grams

• 56.11 grams

• 40.08 grams

• 32.06 grams