Question

B. The weight of 1 mole of a gas of density
0.1784 g L-1 at NTP is -
(1) 0.1784 g
(2) 1 g
(3) 4g
(4) 4 amu​

Answer 1

Answer:

density = 0.1784 g/L

so 1L --> 0.1784 g

22.4L--> 0.1784 × 22.4 = 3.987 g

~~ 4g

so ans is (3) 4gm

i.e. it is Helium

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