For question #17, use the following picture:

17. what element is this? how do you know? (page 495 and periodic table pages 500-501)

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

Most of the volume of an atom is occupied by the