Calculate the percentage by Mass of calcium oxide (ca=40.0, O=16.
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Answer:
The atomic mass of Ca is 40.1 g/mol.
The molar mass of Ca(OH)
2
=74g/mol.
1 mole of Ca(OH)
2
= 74 g Ca(OH)
2
=40.1 g Ca
The percentage composition of calcium in calcium hydroxide =
40.1×100/74
=54%.
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