One mole of copper has a mass of 63.5 grams. Approximately how many atoms of copper are present in one mole of copper?

The electromagnetic force acts between what

Agas at 155 kpa and standard temperature has an initial volume of 1.00 l. the pressure of the gas rises to 500 kpa as the temperature also rises to 135°c. what is the new volume? 2.16 l 0.463 l 0.207 l 4.82 l

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy