A gas has a pressure of 300 torr, a temperature of 400 K, and a volume of 50.0 milliliters. What volume will the gas have at a pressure of 150 torr and a temperature of 200 K?

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

How are isotopes of the same chemical element alike? how are they different?

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added