Question

How many moles of hydrogen atoms are present in one mole of water ($H_{2}O$)?

• A. 2

Answer 1

The correct option is A 2
One mole of water contains 6.023 x ${10}^{23}$ molecules.

Each $H_{2}O$ molecule has two hydrogen atoms and one oxygen atom.

Therefore, in one mole of water ($H_{2}O$), there are two moles of hydrogen atoms and one mole of oxygen atoms.