Consider the astronaut being supplied with He and N2

Transcribed Image Text: 2. Consider the astronaut being supplied with He and N2. The density of helium at
STP is 0.179 g/L and oxygen is 1.43 g/L. (a) Which gas effuses faster? How
much faster? (b) Calculate the molar mass of a gas if 4.40 g occupies 3.50 L at
41°C. (c) How does Graham’s law explain why we smell odors?
3. Exactly 250 cm³ of a gas at STP weighs 0.291 g. The composition of the yas is as
follows: C, 92.24 %, H, 7.76 %. Derive its molecular formula
nass
of
pon occunies 400 cm3 at 228 2°E Find its volume at 0°C, the
mass

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