Calculate the percentage compostion of calcium nitrate ( Ca = 40 , N = 14 , O = 16 )
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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 =
164/40=24
% of N =
164/28=17
% of O =100−(24+17)=59
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