Look at the chemical reaction C2H6 + 137 kJ → C2H4 + H2. How does the chemical energy of C2H6 compare to the chemical energy of C2H4 and H2?

In which phase(s) do the molecules take the shape of the container?

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town

Air can be considered a mixture. which statement does not explain why?