Ideal Gas Law

What does the variable 'n' represent in the Ideal Gas Law equation (PV = nRT)?

• Pressure

• Volume

• Number of moles

• Temperature

What is the approximate temperature of absolute zero in degrees Celsius?

• 0 °C

• -100 °C

• -273.15 °C

• 100 °C

If the volume of an ideal gas is decreased while keeping the temperature and the number of moles constant, what happens to the pressure?

• It increases

• It decreases

• It remains constant

• It fluctuates unpredictably

When the temperature of an ideal gas is increased while maintaining constant pressure and number of moles, what change occurs in its volume?

• The volume decreases

• The volume increases

• The volume remains constant

• The volume first increases then decreases