Question

Average Mass and the Mole

1. If a sample of 10,000 carbon atoms contains 9,889 atoms of carbon-12(mass 12.0000 amu) and 111 atoms of carbon-13(mass 13.0034 amu), what is the average mass ofthe carbon atoms present in the sample? How does this compare to the mass of carbon listed in the periodic table?2. a) How many atoms of carbon are there in one mole of carbon?b) How much does one mole of carbon weigh?3. a)What is the molar mass of Freon 12?b) How many moles of carbon are there in one mole of Freon 12?c) How many moles of chlorine atomsare there in one mole of Freon 12?d) How many moles of Freon 12 are there in 6.18g or Freon 12?e) How many molecules of Freon 12 are there in 6.18g of Freon 12?f) How many carbon atoms are there in 6.18g of Freon 12?g) How many chlorine atoms are there in 6.18g of Freon 12?h) How many atoms are there (total-of all elements) in 6.18g of Freon 12?

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