Ch 3.4 RFM & % by mass

What is the RFM of water?

• 8

• 18

• 16

• 10

What is the % of nitrogen in ammonia, NH₃?

• 50%
• 25%
• 90%
• 82%

What is the RFM of CuO?

• 63.5

• 92.4

• 45.2

• 79.5

What is the % of Fe in Fe(OH)₂?

• 62%

• 54%

• 25%
• 10%

What is the RFM of Fe(OH)₃?

• 56

• 89

• 120

• 107

What is the RFM of Al₂O₃?

• 200

• 89

• 56

• 102

What is the % of O in H₂O?

• 25%
• 89%

• 33.33%
• 50%

What is the RFM of MgO?

• 60

• 25

• 12.5

• 40

Calculate the % of Zn in ZnO

• 50%
• 25%
• 80%

• 10%

Calculate the RFM of ZnO

• 45

• 81

• 73

• 92