Question

what is the percent water in hydrated calcium chloride (cacl2.2h20)

Answer 1

Ca=40
Cl=35.5
cacl2.2h2o=147
2h2o=36
36/147=0.245%

Answer 2

The percent of water in hydrated calcium chloride is 21.8 %

Explanation:

To calculate the mass percentage of water in hydrated calcium chloride, we use the equation:

$\text{Mass percent of water}=\frac{\text{Mass of water}}{\text{Mass of hydrated calcium chloride}}\times 100$

Mass of 2 water molecules = 32 g

Mass of hydrated calcium chloride = 147 g

Putting values in above equation, we get:

$\text{Mass percent of water}=\frac{32g}{147g}\times 100=21.8\%$

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