Determine the mass percentage composition of water (H=1, O=16).

Determine the percentage composition of water (H_(2)O) in hydrogen peroxide H_(2)O_(2) [R.A.M.: H = 1, 0 = 16.]

Calculate the mass percentage composition of the elements in nitric acid (H=1 ,N=14, O=16) .

Calculate the mass percentage composition of copper in copper sulphate. [Cu = 63.5, S = 32, O = 16]

Calculate the molecular mass and percentage composition of HgO. [R.A.M.: O = 16, Hg = 200.6.]

Calculate the mass percentage of composition of sulphur in calcium sulphate, CaSO_(4) [Ca = 40, S= 32, O= 16]

The gravimetric composition of water as H:O is

Calculate the mass percentage of each element in water (H_(2)O)