1.

Calculate the mass percentage of hydrogen atom in 1 mole of water.

Answer»

Molar mass of water = 18.02 g

Mass % of hydrogen = \(\frac{Total\,mass\,of\,the\,elements\,in\,the\,compound}{Molar\,mass\,of\,the\,compound}\) x 100

=  \(\frac{2\times1.008}{18.02}\) x 100 = 11.18%

Mass % of oxygen = \(\frac{16.00}{18.02}\) x 100

= 88.79



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