A 1.0 mol sample of oxygen gas is initially at 25 °C and is then cooled to −10 °C at…
CHEMISTRY · Multi-part · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures
Problem
A 1.0 mol sample of oxygen gas is initially at 25 °C and is then cooled to −10 °C at constant pressure.
(a) Convert each of the given Celsius temperatures to Kelvin.
(b) Calculate the ratio of the average kinetic energy per molecule at 25 °C to that at −10 °C.
(c) If the average kinetic energy per oxygen molecule at 25 °C is 6.20×10−21J, determine the corresponding value at −10 °C. Report your answer with an appropriate number of significant figures.