Question

18/ A mixture of argon (Ar) and nitrogen (N2) has a
density of 1.40 g L-1 at STP. Mole fraction of N2
in the mixture is (Given atomic mass of Ar = 40)
(a) 0.3
(6) 0.4
(c) 0.5
(d) 0.72.
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Answer 1

Explanation:

mixture of argon (Ar) and nitrogen (N2) has a density of 1.40 g L-1 at STP. Mole fraction of N2 in the mixture is (Given atomic mass of Ar=40