Percent Comp Question Preview (ID: 50551)
Determine The Percent Composition.
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What is the percent composition of nitrogen in NaNO3?
a) 16.9%
b) 83.1%
c) 64.6%
d) 50%
What is the percent composition for each element in water (H2O)?
a) 67% H, 33% O
b) 94% H, 6% O
c) 11% H, 89% O
d) 2%H, 16% O
What is the percent composition for each element in NH3?
a) 14% N, 3% H
b) 82% N, 18 %H
c) 50% N, 50% H
d) 25% N, 75% H
What is the percent composition of calcium carbonate (CaCO3)?
a) 57% Ca, 9% C, 34% O
b) 25% Ca, 15% C, 60% O
c) 40% Ca, 12% C, 48% O
d) 40% Ca, 12% C, 16% O
What is the percent composition of each element in MgCl2
a) 50% Mg, 50% Cl
b) 59% Mg, 41% Cl
c) 42% Mg, 58% Cl
d) 26% Mg, 74% Cl
What is the percent composition of each element in CaPO4
a) 39% Ca, 20% P, 41% O
b) 40% Ca, 31% P, 16% O
c) 22% Ca, 25% P, 53% O
d) 30% Ca, 23% P, 47% O
What is the percent composition for each element in Na2SO3
a) 23% Na, 45% S, 32% O
b) 23% Na, 32%S, 16%O
c) 36% Na, 45% S, 23% O
d) 36% Na, 25% S, 38% O
What is the percent composition for carbon and hydrogen in ethane, C2H6?
a) 80% C and 20% H
b) 20% C and 80% H
c) 20% C and 60%H
d) 33% C and 66% H
What is the percent oxygen in CO
a) 21.4%
b) 49.2%
c) 50.0%
d) 57.1%
What is the percent of S in Na2S?
a) 41%
b) 59%
c) 66%
d) 33%
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