Mole Conversion Review

What is the mass in grams of 0.89 mol of CaCl₂?

• 111 grams

• 0.008 grams

• 98.9 grams

• none of the choices

How many moles of sodium chloride are in a 321.8 g sample?

Sodium Chloride = NaCl

• 18810 moles

• 3.315 x 10²⁴ moles

• 5.507 moles

• 4.767 moles

How many molecules are in 2.5 mol of NaCl?

• 1.51x10²³

• 146

• 4.15

• 1.51x10²⁴

How many moles are in 3.01 x 10²² atoms of magnesium?

• 0.05 moles

• 1.81 x 10⁴⁶ moles

• 5.00 x 10²¹ moles

• 5 moles

How many grams are in 1.2 x 10²⁴ molecules of CO?

*****This is a 2 step problem******

• 28 grams

• 56 grams

• 6.02 grams

• 1.2 grams