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2 years ago

How many moles are in 281 g of Ca(OH)2?

Chemistry

1 answer:

Natasha_Volkova [10]2 years ago

5 0

Answer:

3.79 moles

Explanation:

To convert moles to gams of a substance we need to find the molar mass of the substance. For Ca(OH)₂ th molar mass is:

1Ca = 40.08g/mol

2O = 2*16g/mol = 32g/mol

2H = 2*1.01g/mol = 2.02g/mol

The molar mass is:

40.08g/mol + 32g/mol + 2.02g/mol = <em>74.1g/mol</em>

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And moles are:

281g * (1mol / 74.1g) =

<h3>3.79 moles</h3>

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