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Chapter 3: Q 36E (page 169)

Question: Determine the percent water in CuSO4.5H2O to three significant figures.

Short Answer

Expert verified

The percent of water in CuSO4.5H2O is 36.08%.

Step by step solution

01

Calculating moles

In CuSO4.5H2O 1 mole of the compound has 5 moles of water.

So, the mass of 5 moles of water= number of moles of water x molecular mass of water.

02

Calculating percent water

Molecular mass of CuSO4.5H2O is 249.72g/mol

Molecular mass of water = 18.02g/mol

% water = (mass of water/molecular mass of compound) x 100

= 918.02/249.72) x 100

= 36.08%

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