A hard water sample contains 8.5*10^-3 Ca by mass (in the form of Ca2+ ions) How

Question

A hard water sample contains 8.5*10^-3 Ca by mass (in the form of Ca2+ ions) How much water (in grams) contains 1.2 g of Ca (1.2 g of Ca is the recommended daily allowance of calcium for this between 19 and 24 years old). Express your answer using two significant figures. A hard water sample contains 8.5*10^-3 Ca by mass (in the form of Ca2+ ions) How much water (in grams) contains 1.2 g of Ca (1.2 g of Ca is the recommended daily allowance of calcium for this between 19 and 24 years old). Express your answer using two significant figures. How much water (in grams) contains 1.2 g of Ca (1.2 g of Ca is the recommended daily allowance of calcium for this between 19 and 24 years old). Express your answer using two significant figures.

Explanation / Answer

Basis: 100 gm of water

8.5*10-3 gm of Ca is there is 100 gm of water

1.2 gm of required Ca is there in 100*1.2/(8.5*10-3)= 14117.65 gm of water

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