Calculate the percentage of water for each of the hydrates listed: a. MgSO4 ● 7H2O

b. LiC2H3O2 ● 2H2O

c. Al(NO3)3 ● 9H2O

Mass ratio:

a. Approximately .

b. Approximately .

c. Approximately .

Explanation:

Look up the relative atomic mass of each element on a modern periodic table:

: .: .: .: .: .: .: .: .

For example, the relative atomic mass of is . Hence, the mass of one mole of atoms would be (approximately) .

Calculate the formula mass of :

.

Calculate the formula mass for each of the hydrates:

.

.

.

The mass of of formula units is .

There are seven mole of formula units in that many formula units. The mass of that of formula units would be .

Hence, the percentage mass of in would be:

.

Similarly:

Mass of of formula units: .Mass of the of in that of formula units: .Percentage mass of in : .Mass of of formula units: .Mass of the of in that of formula units: .Percentage mass of in : .

1) according to the law of conservation of mass ,in all chemical reactions total mass is unchanged

Convection is da answer my dood