Answer Happy

18. Which of the following gases can be liquefied at 25 °C? Gas CH CH boiling pt. -161.5 °C -42.1 °C -183 °C critical temp. -82.6 °C +96.7 °C -119 °C 02 a. CH, only b. CiH, only c. O, only d. CH4 and 02 e. CH, and O2