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Over [174]
3 years ago
12

What is the percent composition by mass of oxygen in Ca(NO3)2 (gram-formula mass=164 g/mol)?

Chemistry
1 answer:
natita [175]3 years ago
5 0
<span>Solving for the formula mass of calcium nitrate: Atom | Atomic Mass Ca | 1 x 40.08 = 40.08 N | 2 x 14.01 = 28.02 O | 6 x 16 = 96 FM = 164.10 amu Solving for the percent: %O2 = mass of oxygen / mass of compound x 100% %O2 = 96 amu / 164.10 amu x 100% %O2 = 58.50% or 59%</span>
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