Lo 3 The student is able to select and apply mathematical relationships to mass data in order to justify a claim regarding the identify and/or estimated purity of a substance. (Sec 5, 7) lo 3

The gas sample is then cooled to a temperature of 15°C. Solve for the new condition. (Hint: A moveable piston keeps the pressure constant overall, so what condition will change?)

• The gas sample is then cooled to a temperature of 15°C. Solve for the new condition. (Hint: A moveable piston keeps the pressure constant overall, so what condition will change?)
• 5.43 L

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• CONCEPT CHECK!

Root Mean Square Velocity

• R = 8.3145 J/K·mol
• (J = joule = kg·m2/s2)
• T = temperature of gas (in K)
• M = mass of a mole of gas in kg
• Final units are in m/s.

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AP Learning Objectives, Margin Notes and References

• Learning Objectives
• LO 1.3 The student is able to select and apply mathematical relationships to mass data in order to justify a claim regarding the identify and/or estimated purity of a substance.