Question

Water contains 100/7% of hydrogen and the
rest is oxygen. In 350 g of water, oxygen will be.

Answer 1

Step-by-step explanation:

16 gram of oxygen will be in each molecule of water

Answer 2

In 350 g of water, oxygen will be 300 g.

Step-by-step explanation:

Part of hydrogen, 1 g of  water contains = $\frac{100}{7} %$ % = $\frac{100}{7 \times 100}$ = $\frac{1}{7}$

Part of oxygen, 1 g of water contains = $1-\frac{1}{7} = \frac{6}{7}$

Quantity of oxygen in 350 g of water = $350\times\frac{6}{7}$ = 300 g

Hence, in 350 g of water, oxygen will be 300 g.