Titanium oxide (TiO2) is heated in stream of hydrogen to give water and new oxide TixOy. If 1.6 g TiO2 produces 1.44 g TixOy .'x' & 'y' are
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1.6 g oxide looses 0.16 g
80 g oxide looses = 8 g of 'O'
= 1/2 mol of 'O'
= Ti2O3