Question

please bta do please​

Answer 1

Chemical formula of water = H2O

Molecular mass of H2O = (2 * 1) + 16 = 2 + 16 = 18 U (Since Atomic mass of H = 1, O= 16)

Molar mass of H2O = 18g

18 g of H2O = (6.022 * 10 raised to 23) molecules

1 g of H2O = (6.022 * 10 raised to 23)/18

9 g of H20 = (6.022 * 10 raised to 23)/18. * 9

9 g of H2O = (6.022 * 10 raised to 23)/2

9g of H2O = (3.011 * 10 raised to 23) molecules