OL U4 Zone 5

The molar volume of a gas is 22.4 L at (a)   .

• 25°C and 1 atm
• 0°C and 1 atm
• 100°C and 2 atm
• 50°C and 0.5 atm

What does STP stand for in chemistry?

• Standard Temperature and Pressure

• Standard Time and Pressure

• Standard Temperature and Proportion

• Standard Time and Proportion

Which law must be used if conditions are not at STP?

• Ideal gas law

• Dalton's law

• Graham's law

• Henry's law

In the ideal gas law, what does 'V' represent?

• Velocity

• Volume

• Viscosity

• Voltage

What is the volume of one mole of gas at STP?

• 22.4 L

• 24.0 L

• 20.0 L

• 18.0 L

In the reaction 2H₂ + O₂ → 2H₂O, what is the mole ratio of O₂ to H₂O?

• 1:1

• 1:2

• 2:1

• 2:2

Tags

NGSS.HS-PS1-7

What is the value of the gas constant R used in the ideal gas law calculation?

• 0.08206 L atm/mol K

• 8.314 J/mol K

• 0.0821 L atm/mol K

• 8.2057 L atm/mol K

In the following, what will be the value for R:

What is the volume of a balloon if it contains 3.2 moles of helium at a temperature of 20⁰C and 1.2 atm?

• 0.0821 L⋅atm∕mol⋅K

• 8.314 L⋅kPa∕mol⋅K

• 293 K

• 1.2 atm

What does the variable "n" represent in the ideal gas law?

• pressure

• volume

• moles

• the gas constant

• temperature

Solve the following problem:

What is the volume of a balloon if it contains 3.2 moles of helium at a temperature of 20⁰C and 1.2 atm?

• 106.55 K

• 53.3 L

• 293 K

• 64.15 L