A 1.50-L sample of a gas at STP has a mass of 4.75 g. What is one possible formula of the gas
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A 1.50-L sample of a gas at STP has a mass of 4.75 g. What is one possible formula of the gas

[From: ] [author: ] [Date: 11-08-10] [Hit: ]
4L] = 0.0670mol of gas.4.75g / 0.0670 = 70.NF3 = 14 + 3*19 = 71g/mole.......
A 1.50-L sample of a gas at STP has a mass of 4.75 g. What is one possible formula of the gas?
A) NF3

B) CO2

C) C2F4

D) NCl3

E) NO2

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1.50L x [1mole / 22.4L] = 0.0670mol of gas.
4.75g / 0.0670 = 70.9g/mole

NF3 = 14 + 3*19 = 71g/mole.
1
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