What is the percentage composition of carbon in Ca(HCO3)\(_{2}\) ? [ Ca = 40.0, 0= 16.0, C = 12.0, H= 1.0]

What is the percentage composition of carbon

in Ca(HCO3)\(_{2}\) ?

[ Ca = 40.0, 0= 16.0, C = 12.0, H= 1.0]

A 22.2%
B 14.8%
C 7.4%
D 3.7%

waec 2022 chemistry

The correct answer is B. 14.8%

. % of C in Ca(HCO3)2

Molar mass of Ca(HCO3)2 = 40+(1+12+(16*3))2

=40+(13+48)2

=40+122

=162

C/Ca(HCO3)2 x 100

=12 * 2/162 * 100

=14.8%

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