Question

how many moles are there in 7.4g of Ca(OH)2

Answer 1

Explanation:

You will need to divide the given mass by the molar mass of Ca(OH)2.

The molar mass of calcium hydroxide,

Ca(OH)2 is 74.09268 g/mol

Since molar mass is given in g/mol, 4.5 kg needs to be converted to grams.

Convert kg to grams.

4.5kg×1000g

1kg=4500 g

Determine the moles of calcium hydroxide contained in 4500 g Ca(OH)2

by dividing the given mass by its molar mass.

4500g Ca(OH)2×1mol Ca(OH)2

74.09268g Ca(OH)2=61 mol Ca(OH)2

Answer 2

Answer:

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