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Chemistry, 29.10.2019 21:31 sierravick123owr441

The label of a gas cylinder has come off in your laboratory. you know that only one species of gas is contained in the cylinder, but you do not know whether it is hydrogen, oxygen, or nitrogen. to find out, you evacuate a 5-liter flask, seal it and weigh it, then let gas from the cylinder flow into it until the gauge pressure equals 1.00 atm. the flask is reweighed, and the mass of the added gas is found to be 13.0 g. room temperature is 27 °c, and barometric pressure is 1.00 atm. which gas is it? state your assumptions.

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