Are the smallest units that can carry out basic life processes.

If you burn 46.6 g of hydrogen and produce 416 g of water, how much oxygen reacted

What is the volume of 2.5 moles of nitrogen gas (n2)at standard temperature and pressure (stp)?

Temperature is defined as a. the equivalent of heat. b. a measure of the average kinetic energy of the individual atoms or molecules composing a substance. c. how hot or cold it is. d. the total kinetic energy of the atoms or molecules composing a substance. e. none of the above is correct.