Question

Calculate number of molecules in 55g of H2O​

Answer 1

H20 (molecular mass)= 1*2+16 =18g

no.of mole= given mass /molecular mass

=55/18 =3.05 mol

1mol= 6.022*10²³ molecular of water

so,

3.05 mol= 6.022*10²³*3.05

18.3671 * 10²³molecules of H20

Answer 2

Answer:

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Explanation:

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