Moles and Relative Formula mass

• 83

• 90

• 106

• 76

• 79

• 80

• 90

What is the mass of one mole of Al₂(SO₄)₃?

• 75.04 g
• 342.14 g 
• 75.04 mol
• 342.14 mol

How many moles are there in 12.7g of CaF₂?

• 0.20 mol
• 1,000.76 mol
• 6.14 mol
• 0.16 mol

How many moles of carbon atoms are there in 5g of carbon?

• 60 mol
• 17 mol
• 0.42 mol
• 7 mol

What is the mass of 9.4 moles of B₂(Cr₂O₇)₃?

• 6.41 x 10²²g
• 5.67x10²⁴ g
• 49.11 g
• 4,339.23 g

How many moles of (NH₄)₂O are present in 74.9 g?

• 3,907.0  moles
• 1.44 moles
• 8.67x10²³moles
• 0.79 moles

What percent of aluminum oxide is oxygen? Assume oxygen has a molar mass of 16 g/mol and aluminum has a molar mass of 27 g/mol

• 37%

• 47%

• 16%

• 60%

How many moles are in 6 x 10²³ molecules of H₂O?

• 1
• 2
• 6
• 600

How many molecules are in 9.4 moles of AlCl₃?

• 5.66
• 5.66x10²⁴
• 0.705
• 1.25x10²³