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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 0 mocc of noon occunies 400 cm3 at 228 2°F Find its volume at 0°C, the

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 0 mocc of noon occunies 400 cm3 at 228 2°F Find its volume at 0°C, the

Introductory Chemistry: A Foundation
Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
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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
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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