When calcium chloride is dissolved in water, to which end of the adjacent water molecules will a calcium ion be attracted? the oxygen end, which is the negative pole the oxygen end, which is the positive pole the hydrogen end, which is the negative pole the hydrogen end, which is the positive pole?

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