7. Gases

Which law can be used to calculate the number of moles of a contained gas when pressure, volume, and temperature are known?

Why is Venus hotter than Mercury despite being further from the Sun?

A weather balloon is inflated to a volume of 27.3 L at a pressure of 747 mmHg and a temperature of 28.5 °C. The balloon rises in the atmosphere to an altitude where the pressure is 385 mmHg and the temperature is -13.4 °C. Assuming the balloon behaves as an ideal gas, what is the new volume of the balloon at the higher altitude?

If a student collects 2.50 L of hydrogen gas over water at a temperature of 25°C and a total pressure of 1.00 atm, what is the partial pressure of the hydrogen gas, given that the vapor pressure of water at 25°C is 0.0313 atm?

How many molecules of N_2 are present in a 400.0 mL container at 780 mm Hg and 135°C? (Use R = 0.0821 L·atm·mol^{-1}·K^{-1} and 1 atm = 760 mm Hg.)

Which type of gas sample will behave most like an ideal gas (i.e., best approximated by $PV=nRT$)?

Which of the following can result from excessive withdrawal of groundwater?

Which of the following represents the formula for Boyle's Law?

Which of the following statements about gases is correct according to the ideal gas law?

Which of the following changes is most likely to result in an increase in the volume of a gas, assuming all other variables are held constant?

Using the ideal gas law, how many moles of gas are present in a 20 L container at a pressure of 2 atm and a temperature of 400 K? (Use R = 0.0821 L·atm·mol^{-1}·K^{-1})

Which process is believed to have contributed to Earth's oxygen-rich atmosphere according to atomic theory?

According to the ideal gas law, if the pressure inside a sealed, rigid container is doubled, what will happen to the temperature of the gas?

Which of the following is not a variable in the Ideal Gas Law equation PV = nRT?

Which of the following variables is NOT included in the ideal gas equation PV = nRT?