A balloon that is filled with gas was released at ground level where the pressure was 745.0 mmHg an temperature was 39.0 °C. On the ground, the balloon had a volume of 85.0 L. As the balloon floated higher in the atmosphere, it reached an altitude where the pressure and temperature were 170.0 mmHg and 6.50 °C, respectively. Determine the volume (in L) of the balloon at this new altitude to 3 significant figures.

A balloon that is filled with gas was released at ground level where the pressure was 745.0 mmHg an temperature was 39.0 °C. On the ground, the balloon had a volume of 85.0 L. As the balloon floated higher in the atmosphere, it reached an altitude where the pressure and temperature were 170.0 mmHg and 6.50 °C, respectively. Determine the volume (in L) of the balloon at this new altitude to 3 significant figures.

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter5: Gases

Section: Chapter Questions

Problem 143CWP: A certain flexible weather balloon contains helium gas at a volume of 855 L. Initially, the balloon...

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41 A sample of a smokestack emission was collected into 1.25-L tank at Hg and analyzed. The analysis showed 92% CO2, 3.6% NO, 1.2% SO2, and 4.1% H2O by mass. What is the partial pressure exerted by gas?
A sample of a breathing mixture for divers contained 34.3% helium, He; 51.7% nitrogen, N2; and 14.0% oxygen, O2 (by mass). What is the density of this mixture at 22C and 775 mmHg?
A certain flexible weather balloon contains helium gas at a volume of 855 L. Initially, the balloon is at sea level where the temperature is 25C and the barometric pressure is 730 torr. The balloon then rises to an altitude of 6000 ft, where the pressure is 605 torr and the temperature is 15C. What is the change in volume of the balloon as it ascends from sea level to 6000 ft?
Earths atmosphere is approximately 80 N2 and 20 O2. If the total atmospheric pressure at sea level is about 14.7 lb/in2. where lb/in2 is pounds per square inch, a common but non-SI unit of pressure, what are the partial pressures of N2 and O2 in units lbs/in2?
A sample of a smoke stack emission was collected into a 1.25-L tank at 752 mm Hg and analyzed. The analysis showed 92% CO2, 3.6% NO, 1.2% SO2, and 4.1% H2O by mass. What is the partial pressure exerted by each gas?
A mixture of chromium and zinc weighing 0.362 g was reacted with an excess of hydrochloric acid. After all the metals in the mixture reacted, 225 mL dry of hydrogen gas was collected at 27C and 750. torr. Determine the mass percent of Zn in the metal sample. [Zinc reacts with hydrochloric acid to produce zinc chloride and hydrogen gas; chromium reacts with hydrochloric acid to produce chromium(III) chloride and hydrogen gas.]
111 Consider a room that is 14ft20ft wih an 8-ft ceiling. (a) How many molecules of air are present in this room at 20°C and 750 torr? (b) If a pollutant is present at 2.3 ppm, how many pollutant molecules are in this room?
A 275-mL sample of CO gas is collected over water at 31C and 755 mmHg. If the temperature of the gas collection apparatus rises to 39C, what is the new volume of the sample? Assume that the barometric pressure does not change.
According to your calculations, a reaction should yield 5.67 g of oxygen, O2. What do you expect the volume to be at 23C and 0.894 atm?
If 1 cubic foot-28.3 L-of air at common room conditions of 230C and 0.985 bar is adjusted to STP, what does the volume become?
Carbon dioxide, CO2, was shown lo effuse through a porous plate at the rate of 0.033 mol/min. The same quantity of an unknown gas, 0.033 moles, is found to effuse through the same porous barrier in 104 seconds. Calculate the molar mass of the unknown gas.
You have a helium balloon at 1.00 atm and 25C. You want to make a hot-air balloon with the same volume and same lift as the helium balloon. Assume air is 79.0% nitrogen and 21.0% oxygen by volume. The lift of a balloon is given by the difference between the mass of air displaced by the balloon and the mass of gas inside the balloon. a. Will the temperature in the hot-air balloon have to be higher or lower than 25C? Explain. b. Calculate the temperature of the air required for the hot- air balloon to provide the same lift as the helium balloon at 1.00 atm and 25C. Assume atmospheric conditions are 1.00 atm and 25C.

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