Calculate the percentage composition of the following compounds. Show your solution.
1. carbonic acid (H2CO3)
2. benzene (C6H6)
3. calcium nitrate (Ca(NO3)
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Explanation:
The formula of calcium nitrate is Ca(NO3)2
Thus, the formula mass or molecular mass
=At.massofCa+2×At.massofN+6×At.massofoxygen
=40+2×+6×16=164
% of Ca =16440×=24
% of N =16428×=17
% of O =100−(24+17)=59
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