Question #19845

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Answer 1 · 2017-05-01T07:13:40

The first step to solving such questions would be writing the chemical equations.

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Given that there is #"5.85g"# of calcium chloride, and that the molar mass of calcium chloride is

#40.08 + (2 xx 35.45) = "110.98 gmol"^(-1)#

the amount of calcium chloride in moles is

#"5.85 g"/"110.98 gmol"^(-1) = "0.052712 moles"#

By molar ratio, the amount of sodium chloride formed in moles is #0.052712# moles.

The molar mass of sodium chloride is

#22.99 + 35.45 = "58.44 gmol"^(-1)#

The mass of sodium chloride formed is

#"0.052712 moles" xx "58.44 gmol"^(-1) = "3.08 g"#

Perhaps taking note of the units can help you to find answers; for example:

#"mol" xx "gmol"^(-1)#

gives the answer is grams (the mass) and so on and so forth!