CH₄ + 2O₂ → CO₂ + 2H₂O If 20 moles of methane are available, how many moles of methane (CH₄) will burn?

How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.

Which would freeze at a higher temperature: the great salt lake or lake tahoe? a. lake tahoe would freeze at a higher temperature. b. the great salt lake would freeze at a higher temperature. c. both lakes would freeze at the same temperature.

The following compounds, listed with their boiling points, are liquid at –10ºc: butane, –0.5ºc; ethanol, 78.3ºc; toluene, 110.6ºc. at –10ºc, which of these liquids would you expect to have the highest vapor pressure? which the lowest? explain. (4 points)