Answer to Question #75859 in General Chemistry for seth

Question

A helium-filled balloon has a volume of 2.87 L at 15◦C. The volume of the balloon decreases to 2.46 L after it is placed outside on a cold day. What is the outside temperature in K? Answer in units of K.
003 (part 2 of 2) 10.0 points What is the outside temperature in ◦C? Answer in units of ◦C.
004 10.0 points A lungful of air (387 cm3) is exhaled into a machine that measures lung capacity. If the air is exhaled from the lungs at a pressure of 2.17 atm at 42.7◦C but the machine is at ambient conditions of 0.958 atm and 23◦C, what is the volume of air measured by the machine? Answer in units of cm3.
005 10.0 points A balloon filled with helium gas has a volume of 341 mL at a pressure of 1atm. The balloon is released and reaches an altitude of 6.5km, where the pressure is 0.5atm. Assuming that the temperature has remained the same, what volume does the gas occupy at this height? Answer in units of mL.
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