Question

Calculate the mass of the following a) 2 molecules of water​

Answer 1

Answer:

Explanation:Follow me

Answer 2

Answer:

One mole of H2O is made up of 2 moles of hydrogen atoms and 1 mole of oxygen atom.

Mass of 1 mole of hydrogen atom = 1 g/mol

Mass of 1 mole of oxygen atom = 16 g/mol

Mass of 2 moles of hydrogen atoms = 1 × 2 g/mol => 2 g/mol

Mass of 1 mole of oxygen atom = 1 × 16 g/mol => 16 g/mol

:. Mass of 1 mole of water = 2 + 16 g/mol => 18 g/mol