Parts per million (ppm) is a common way to express small concentrations of a solute in water. a sample of tap water that is 25 ppm cl−cl− contains 25 grams of cl−cl− for every 1,000,000 grams of water. which units are numerically equal to ppm for dilute aqueous solutions? μg/l cg/l ng/l mg/l g/l

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