MCQ

Mole Concept

By Sakshi Goel | 22 May'20 | 1 K Views

Problem:
Which has maximum molecules?
(a) 7 g N₂O
(b) 20 g H₂
(c) 16 g NO₂
(d) 16 g SO₂

Solution:

Maximum number of moles have maximum number of molecules.
Moles of N₂O = $\frac{7}{44}$ = 0.16 mol

Moles of H₂ = $\frac{20}{2}$ = 10 mol

Moles of NO₂ = $\frac{16}{46}$ = 0.35 mol
Moles of SO₂ = $\frac{16}{64}$ = 0.25 mol

H₂ has maximum number moles and thus maximum number of molecules. Correct option is (b).

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By Sakshi Goel | 28 Oct'18 | 3 K Views |

By Sakshi Goel | 28 Oct'18 | 3 K Views |