7. Gases

Which of the following statements about an ideal gas is false?

A sample of gas expands from 1.0 m^3 to 4.0 m^3 at constant temperature and pressure. According to the ideal gas law, what happens to the number of moles of gas in the system?

Which gas is most commonly used inside a neon sign to produce its characteristic red-orange glow?

Which of the following statements accurately describes the seasonal variation of CO2 concentrations in the atmosphere over the course of a year?

The temperature of a sample of CH4 gas (10.34 g) in a 50.0 L vessel at 1.33 atm is _______ °C. (Use R = 0.0821 L·atm/mol·K)

A cylinder contains 28.5 L of oxygen gas at a pressure of 1.8 atm and a temperature of 298 K. Using the Ideal Gas Law, how many moles of gas are in the cylinder?

What pressure will 14.0 g of CO exert in a 3.5 L container at 75°C, assuming ideal gas behavior?

A 0.334 g sample of an unknown halogen occupies 109 mL at 398 K and 1.41 atm. What is the identity of the halogen?

Avogadro's law states that at a given temperature and pressure, which quantity remains constant for all ideal gases?

Significant destruction of a forest habitat will increase the concentration of which gas in the atmosphere?

If a gas has the same temperature throughout, which of the following statements about its pressure and volume is true according to the ideal gas law?

Which one of the following statements applies to an ideal gas?

Which statement best summarizes the relationship described by the Ideal Gas Law?

Which of the following gases deviates most from ideal behavior under standard conditions?