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

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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