What is the percent by mass of carbon found in caffeine

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What is the percent by mass of carbon found in caffeine C8H9N4O2 what is the mass of carbon in milligrams found in 95mg of caffeine.

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What is the percent by mass of carbon found in caffeine : What is the percent by mass of carbon found in caffeine C8H9N4O2 what is the mass of carbon in milligrams found in 95mg of caffeine.
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