A balloon containing 4.00 moles of N2 gas has a volume of 0.750 L at a...

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A balloon containing 4.00 moles of N₂ gas has a volume of 0.750 L at a pressure of 1.00 atm and a temperature of 27°C. What will the new volume of the balloon be, in liters, if the pressure is doubled to 2.00 atm, the temperature is increased to 127°C, and 1.50 moles of N₂ is removed from the balloon?
On an airliner, an inflated toy has a volume of 0.310 L at 25°C and 745 mmHg. During flight, the cabin pressure unexpectedly drops to 0.810 atm, with the temperature remaining the same. What is the volume, in liters, of the toy at the new conditions?
A helium-filled birthday balloon has a volume of 223 mL at a temperature of 24°C (room temperature). The balloon is placed in a car overnight during the winter where the temperature drops to -13°C. What is the balloon’s volume, in milliliters, when it is removed from the car in the morning (assuming no helium has escaped)?

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