Question

What is the mass in 6.34x10^23 molecules of calcium chloride

Answer 1

Answer : The mass of calcium chloride is, 116.84 grams

Solution : Given,

Molar mass of calcium chloride,
`CaCl_2` = 110.98 g/mole

Number of molecules of calcium chloride =
`6.34* 10^(23)`

As we know that,

1 mole of calcium chloride contains
`6.022* 10^(23)` molecules of calcium chloride

or,

1 mole of calcium chloride contains 110.98 grams of calcium chloride

Or, we can say that

As,
`6.022* 10^(23)` molecules of calcium chloride present in 110.98 grams of calcium chloride

So,
`6.34* 10^(23)` molecules of calcium chloride present in
`(6.34* 10^(23))/(6.022* 10^(23))* 110.98=116.84grams` of calcium chloride

Therefore, the mass of calcium chloride is, 116.84 grams