1.

Calculate the % of each element in calcium carbonate. (Atomic mass: C-12, O-16, Ca-40)

Answer»

Solution :Molarmassof `CaCO_3=40 +12+(3xx16)`
= 100
%of ANELEMENT
`=( "Massof anelementin thecompound ")/(" Molarmassof compound ")xx100`
%ofCin `CaCO_3 =(12)/(100)xx100 =12% `
% ofO in `CaCO_(3) =(16xx3)/(100)xx100= 48 % `
%of Cain `CaCO_(3) =(40 )/(100)xx100 = 40 % `


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