Question

caluclate number. of moles of water 2g of water
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Answer 1

Explanation:

One mole of

H

2

O is made up of 2 moles of Hydrogen atoms and 1 mole of Oxygen atom.

Mass of 1 mole of Hydrogen atoms= 1 g /mol

Mass of 1mole of Oxygen atoms = 16 g/mol

Mass of two moles of Hydrogen atoms = 2x 1 g/mol = 2 g/mol.

Mass of one mole of Oxygen atoms = 1 x 16 g /mol

Mass of one mole of water = 2 g/mol + 16 g/mol = 18 g/mol.