Question

Calculate no. Of mole in 18 gm H2O

Answer 1

mass = 18 g

Mr = 2 +16

= 18

no of moles = 18÷18

= 1 mole of h20

Answer 2

The mass of H2o is 18 gm and it's molecular mass equals the mass of two hydrogen atoms plus. The mass of one oxygen atom which equals 18 gm.

so the no. of mole in one.

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