Solve the following problems II — task. Science State Board, Class 10.

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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 \(CaCO_3\) \(=\)

Did you find an error?

16. Solve the following problems II