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Calculate the percentage of each element in calcium carbonate (atomic mass: \(C=12\), \(O=16\), \(Ca=40\)).
 
Given data:
 
Atomic masses:
 
\(C=12\), \(O=16\), \(Ca=40\)
 
Formula:
  
The formula to find the percentage of an element is
 
\(\frac{\text{X}}{\text{Y}}\times100\)
 
Where,
 
X \(=\)
 
Y \(=\)
 
Solution:
 
Molecular mass of \(CaCO_3\) \(=\)
 
% of \(Ca\) in \(CaCO_3\) \(=\)
 
% of \(C\) in \(CaCO_3\) \(=\)
 
% of \(O\) in \(CaCO_3\) \(=\)