Question

density of water is 1g/ml. mass of water is 1.8 I.e. no of mole=0.1na2co3​

Answer 1

Answer:

From density, it can be said that 1 g of water has volume of 1 ml.

Thus, 1.8 ml of water has mass of 1.8 g.

1 mole of water weighs 18 g.

Thus, 1.8 g of water corresponds to 0.1 mole.

1 mole of water contains 6.023×10

23

molecules.

Hence, 0.1 mole of water will contain 6.023×10

22

molecules.