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What is the percent composition by mass of nitrogen in (NH4)2CO3 (gram-formula mass = 96.0 g/mol)? (1) 14.6% (2) 29.2% (3) 58.4% (4) 87.5%

Dana Keller

in Chemistry

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Kristi Hammond on May 23, 2018

The chemical formula is :(NH4)2CO3First you need to get the Molar Mass(MM) of the compound.Here is the solution:Mol Mass = 'N' 28 + 'H' 8 + 'C' 12 + 'Or' 48Mol Mass = 96 g/mol.To obtain the percentage of each of the elements, it is necessary to divide the molar mass of the element by the molar mass of the compound and multiply by 100 or (MM/ item MM of the compound x 100).Here is the solution:% of N = 28 / 96 = 0.2917 x 100% = 29.17%.% H = 8 / 96 = 0.0833 x 100% = 8.33%.% C = 12 / 96 = 0.125 x 100% = 12.5%.% of Or = 48 / 96 = 0.5 x 100% = 50%.(Total = 100%).Of the solution, the answer to your question is that it is not the 29.2% of Nitrogen(N) in the compound (NH4)2CO3.


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