stoichiometry, Chemistry

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The base "G" in DNA is guanine. a 15 ug sample of guanine in excess oxygen resulting in 21.84 ug of CO2, 4.47 ug of H2O, and 22.83 ug of NO2. How many grams of carbon does 15 ug of guanine contain? How many grams of hydrogen does 15 ug of guanine contain? How many grams of nitrogen does 15 ug contain?

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