Question

Arrange in the increasing order of the number of molecules
(a) 34g NH3 (b) 10g H2 (c) 1 mol carbon

Answer 1

Explanation:

number of mole = no. of molecule/ NA

weight /molecular weight = no. of moles /NA

here NA is avogadro no. having value equal to 6.02 ×10^23

1. for 34g NH3

34/17 = no. of molecules /NA

no. of molecules = 2 NA

2. for 10g H2

10/2 = no. of molecules / NA

no. of molecules = 5NA

3. 1 mole carbon

mole = no. of molecule/NA

.

1 = no. of molecule / NA

no. of molecule =NA

hence

order will be

b>a>c

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