Use the following equation for the combustion of methane to answer the following questions:
CH4 + 2O2 -> CO2 +2 H2O ΔH = -900 kJ
a. Is the reaction exothermic or endothermic?

b. If you burn 2 moles of methane, how much energy is released?

c. If you burn 48 g of methane, how much energy is released?

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

Which process transfers heat from inside earth to its surface? convection currents in mantle pulling away of tectonic plates drawing in of tectonic plates convection currents in crust

Which of these is an intensive property of a substance