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 9.What is the mass of 3.06 x 10^22 molecules of CO2?

  • A.135g CO2
  • B. 2.24g CO2
  • C. 14.4g CO2
  • D. 866g CO2 

10. What is the mass in grams of 2.00 x 10^23molecules of F2 (Hint: Molecules-moles-mass)

  • A. 126g F2
  • B. 12.6g F2
  • C. 38g F2
  • D. 3.54 g F2

11.How many moles are in 98.3 grams of aluminum hydroxide, Al(OH)3?

  • A. 3.20 moles
  • B. 1.07 moles
  • C. 1.26 moles
  • D. 1.28 moles 
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