In two or more complete sentences, explain how fossil fuels play a role in your daily life.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Give more examples of this type of heat transfer:

How does a sample of helium at 15 degree celsius compare to a sample of helium at 215 k? a) the helium at 15 degrees celsius has a higher average kinetic energy that the sample at 215 k. b) the helium at 15 degrees celsius has lower nuclear energy that the sample at 215 k. c) the helium at 15 degrees celsius has slower- moving atoms that the sample at 215 k. d) the helium at 15 degrees celsius has smaller atoms than the sample at 215 k.