Solving Ideal Gas Law Problems with Density

What is the primary challenge when trying to calculate the density of a gas using the ideal gas law PV = nRT?

• Density is not one of the variables in the equation.

• The equation only works for liquids.

• The equation requires the gas to be at STP.

• The equation does not account for molar mass.

Which form of the ideal gas law should be used to solve for the density of a gas?

• V = nRT/P

• PV = nRT

• D = PM/RT

• P = nRT/V

What is the first step in converting Celsius to Kelvin?

• Multiply by 273

• Add 273

• Subtract 273

• Divide by 273

How do you convert pressure from millimeters of mercury to atmospheres?

• Multiply by a conversion factor

• Divide by a conversion factor

• Add a conversion factor

• Subtract a conversion factor

What is the molar mass of sulfur dioxide (SO2)?

• 32.1 grams per mole

• 64.1 grams per mole

• 16.0 grams per mole

• 48.0 grams per mole

What are the final units for density when using the transformed ideal gas law equation?

• Moles per liter

• Grams per liter

• Liters per mole

• Grams per mole

What does STP stand for in gas law problems?

• Standard Temperature and Pressure

• Standard Time and Pressure

• Standard Time and Proportion

• Standard Temperature and Proportion

What is the standard temperature at STP?

• 100 degrees Celsius

• 0 degrees Celsius

• 273 degrees Celsius

• 25 degrees Celsius

What is the formula for molar mass using density and the ideal gas law?

• M = RTD/P

• M = DRT/P

• M = PRT/D

• M = PDR/T

How is density represented in the transformed ideal gas law equation?

• Volume divided by mass

• Pressure divided by temperature

• Mass divided by volume

• Temperature divided by pressure