A sample of H₂(g) is cooled from 35 °C to −15 °C

CHEMISTRY · Single correct · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

A sample of H₂(g) is cooled from 35 °C to −15 °C. What is the value of

\dfrac{KE_f}{KE_i}

, the ratio of the final average kinetic energy to the initial average kinetic energy of the molecules? (a)

1.19

(b)

0.94

(c)

0.84

(d)

0.43