Question

Calculate the relative formula mass of water, H₂O.
(Relative atomic masses: H = 1.0, 0 = 16)

Answer 1

The molecular mass of water

H2O = ( 2 * Atomic mass of hydrogen) + ( 1 * atomic mass of oxygen)

= ( 2 * 1 . 0084 ) + ( 1 * 16 )

= 18.0168

= 18.02 g/ mol