the element magnesium, Mg, has three common isotopes: 24Mg, 25Mg,26Mg. The difference between these three isotopes is

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

What are the 4 phases of matter in order of increasing engery content?

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