Moles - Mixed Problems

What is the molar mass of Mg₃N₂?

• 191.26 g/mol

• 76.645 g/mol

• 38.332 g/mol

• 100.929 g/mol

Calculate the molar mass of Ba(C₂H₃O₂)₂

• 255.416 g/mol

• 237.153 g/mol

• 392.744 g/mol

• 196.347 g/mol

Do you need to use your Periodic Table in this problem?

How many moles are in 4.5x10²⁴ atoms of NH₃?

• yes

• no

Would you need to use Avogadro's number in this question?

How many moles are in 4.5x10²⁴ atoms of water?

• yes

• no

Would you need to use your periodic table in this question?

How many moles are in 4.5x10²⁴ atoms of water?

• yes

• no

Do you need to use Avogadro's number in this problem?

How many moles are in 4.5x10²⁴ atoms of NH₃?

• no

• yes

Would you need to use Avogadro's number in this question?

How many atoms are present in 69.0 moles of SrO?

• yes

• no

Would you need to use Avogadro's number in this problem?

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

• no

• yes

Would you need to use Avogadro's number in this problem?

How many atoms are present in 69.0 moles of SrO?

• yes

• no

Would you need to use the Periodic Table in this problem?

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

• no

• yes