Question

Calculate the number of molecules in 3.4 moles of H2O​

Answer 1

Answer:

GIVEN MASS -- 18*3.4=61.2

Na ----22.4*10^-19

ATOMIC MASS = 18

WE HAVE TO FIND *N*

m/M = N/Na

61.2/18 =N /22.4*10^-19

18N= 61.2*22.4*10^-19

N = 76.16 * 10^-19

Explanation:

I M NOT SURE IN VALUE OF Na

PLEASE PARDON

HOPE IT HELPS

Answer 2

Given,

Moles = 3.4

No. of Molecules = Moles*Avogadro Number

= 3.4*6.022*10²³

= 20.474*10²³

I hope this helps.