Ideal Gas Law Quiz

What are the main variables used in the ideal gas law?

• Temperature, Density, Volume, Moles

• Pressure, Density, Volume, Moles

• Temperature, Pressure, Volume, Moles

• Temperature, Pressure, Density, Moles

What is the value of the gas law constant R?

• 8.314 J/mol K

• 0.0821 atm L/mol K

• 0.0821 J/mol K

• 1.987 cal/mol K

Why is it important to convert Celsius to Kelvin in gas law problems?

• To simplify calculations

• To avoid negative temperatures

• To match the units of pressure

• To match the units of the gas law constant

In the methane gas problem, what is the first step to find the pressure?

• Convert liters to milliliters

• Convert Celsius to Fahrenheit

• Convert atmospheres to pascals

• Convert grams to moles

What is the molar mass of methane (CH4)?

• 18 g/mol

• 14 g/mol

• 12 g/mol

• 16 g/mol

How do you calculate the pressure of methane gas using the ideal gas law?

• PV = nRT, solve for V

• PV = nRT, solve for P

• PV = nRT, solve for n

• PV = nRT, solve for T

In the oxygen gas problem, what is the first step to find the mass?

• Convert atmospheres to pascals

• Convert milliliters to liters

• Convert grams to moles

• Convert Celsius to Fahrenheit

What is the molar mass of oxygen (O2)?

• 32 g/mol

• 16 g/mol

• 28 g/mol

• 18 g/mol

How do you find the number of moles of oxygen gas using the ideal gas law?

• PV = nRT, solve for T

• PV = nRT, solve for V

• PV = nRT, solve for P

• PV = nRT, solve for n

What is the final step to find the mass of oxygen gas in the problem?

• Convert Celsius to Kelvin

• Convert moles to grams

• Convert liters to milliliters

• Convert atmospheres to pascals