The speed-time graphs below represent the motion of a car. Match the descriptions with the graphs. Explain your answers.

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

The size (radius) of an oxygen molecule is about 2.0 ×10−10m. make a rough estimate of the pressure at which the finite volume of the molecules should cause noticeable deviations from ideal-gas behavior at ordinary temperatures (t= 300k ). assume that deviatons would be noticeable when volume of the gas per molecule equals the volume of the molecule itself.

Name 3 types of energy you see being used as you look around a classroom