Question

Convert into moles 1. 20 g of water​

Answer 1

Answer: we know the molecular mass of hydrogen is 1 and oxygen is 16.

we know the formula of water is H2O

H2O

=2×1+16

= 2+16

= 18g

So, one mole of water weight is 18g.

therefore no of mole = give mass/molar mass

so, 20/18 = 1.11 moles

Answer 2

Explanation:

H2O = 2+16 = 18

18 g = 1 mole H2O

1 g = 1/ 18 moles

1.20 g = 1.20 / 18 moles

=. 067 moles