ANSWER ASAP What are the ions present in the compound MgO? * 1 (1 Point)
Mg2+ and O-
Mg2- and O2+
Mg+ and O-
Mg2+ and 02-

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

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?

Which tool is least in predicting weather