Question

What is the mass of
a) 0.2 mole of Sulphur atoms.
b) 2 moles of water molecules.

Answer 1

Answer:

Therefore, the mass of 0.2 moles of oxygen atom is 3.2 grams and the mass of 0.5 moles of a water molecule is 9.0 grams.

Explanation:

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Answer 2

Answer:

(a) The mass 0.2 moles of Sulphur atoms is 6.4 g.

(b) The mass of 2 moles of water molecules is 36 g.

Explanation:

Mass is given as,

$m=n\times M$

Here, $n$ is the number of moles and $M$ is the atomic or molecular mass.

(a) The mass 0.2 moles of Sulphur atoms is,

$m=0.2\times 32\text{ g}\\=6.4\text{ g}$

(b) The mass of 2 moles of water molecules is,

$m=2\times 18\text{ g}\\=36\text{ g}$