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65.) Coal is a mineral of fossilized carbon which is used as fuel and contains carbon,...

65.) Coal is a mineral of fossilized carbon which is used as fuel and contains carbon, hydrogen, sulfur, oxygen and nitrogen. Anthracite, a high grade, high luster, hard and compact variety of coal, contains about 92.1 percent carbon. [2 pt.]

a. How much carbon (in grams) is present is a 200 kg sample of anthracite?

b. How many atoms of carbon are present in this sample?

c. How many grams of other impurities are present in the coal sample?

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