Problem
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1.
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1.
Acetylsalicylic acid, C9H8O4, (aspirin) is one of the most commonly
used pain relievers. A typical aspirin tablet contains 500 mg of acetylsalicylic acid. How many moles
of acetylsalicylic acid are there in a typical tablet?
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2.
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Aspartame, C14H18N2O5, is an artificial
sweetener marketed as Nutra-Sweet. How many molecules are there in 10 grams of
aspartame?
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3.
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A
compound containing only nitrogen and oxygen is 30.4% N; the molar mass of the compound is 92 g. What
is the empirical formula of the compound? What is the molecular formula of the
compound?
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4.
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A
compound contains only carbon, hydrogen and oxygen. Combustion of 10.68 g of the compound yields
16.01 g of carbon dioxide and 4.37 g of water. The molar mass of the compound is determined to be 176
g. Determine the molecular formula of the compound.
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5.
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Calculate the percent of N in the aspirin substitute, acetaminophen,
C8H9O2N.
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