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Question

Calculate the molar mass of Calcium Hydroxide.

A
65 g/mol
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B
84 g/mol
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C
74 g/mol
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D
100 g/mol
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Solution

The correct option is C 74 g/mol
The Molar Mass of Ca= 40 g/mol.
The Molar Masses of O and H are 16 g/mol and g/mol respectively.

Thus, the Molar Mass of Ca(OH)2 is
40 + 2(16+1)= 74 g/mol.

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