A neutral gas that is made of nitrogen and hydrogen only contains 7 g of nitroge

Question

A neutral gas that is made of nitrogen and hydrogen only contains 7 g of nitrogen is in a mixture of with total mass 17 g, what is the mass fraction of the gas?

Options:

A . 0.5

B . 0.25

C . 0.45

D . 0.8

Answer: Option A
Answer: (a).0.5

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