Explain each of the following in terms of dalton's atomic theory.
a. the law of conservation of mass
b. the law of definite proportions
c. the law of multiple proportions

The laws given in terms of Dalton's atomic theory are explained below:

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Explanation:

a. The Law of Conservation of Mass

Atoms can neither be destroyed nor created.

b. Law of Definite Proportions

Atoms of different elements combine with each other in simple whole number ratios.

For example, water always consists of hydrogen and oxygen atoms in a 2:1 ratio.

c. Law of Multiple Proportions

Atoms of the same elements can combine in more than one ratio to form two or more compounds.

For example, hydrogen and oxygen can combine in a 2:1 ratio to form water or in a 1:1 ratio to form hydrogen peroxide.

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%