A. answer the following :  1. What are the formulas of the hydrated salts?Magnesium Sulfate______________________Calcium Sulfate___________________Copper(II) Sulfate__ 2. .What is the %H2O in each of these hydrated salts Magnesium Sulfate______________________Calcium Sulfate___________________Copper(II) Sulfate_________

Asked Oct 15, 2019
A. answer the following : 
1. What are the formulas of the hydrated salts?
Magnesium Sulfate______________________
Calcium Sulfate___________________
Copper(II) Sulfate__
2. .What is the %H2O in each of these hydrated salts
Magnesium Sulfate______________________
Calcium Sulfate___________________
Copper(II) Sulfate_________

Expert Answer

Step 1

The formulae for the following hydrated salts are given as,


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Hydrated Salt Magnesium Sulfate Calcium Sulfate Formula MgSO4.7H2O CaSO4.2H2O Copper (II) Sulfate CuSO4. 5H20

Step 2

Part A:

Magnesium sulfate heptahydrate (MgSO4.7H2O)

Mass of MgSO4.7H2O = (24 + 32 + 16 x 4) + (7 x 18)

Mass of MgSO4.7H2O = 246 u

Mass of water in MgSO4.7H2O = 7 x 18 = 126 u


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Mass of water % H2O = x 100 Total mass of compound 126 x 100 246 % H20 = % H20= 51.21%

Step 3

Part B:

Calcium Sulfate dihydrate (CaSO4.2H2O)

Mass of CaSO4.2H2O = (40 + 32 + 16 x 4) + 2 x 18

Mass of CaSO4.2H2O = 172 u

Mass of wa...


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Mass of water % H2O= x 100 Total mass of compound 36 x 100 172 % H2O % H2O 20.93%


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