Your little cousin takes 2 empty baloonsthat each have 2 grams of mass he blows one up he says that they should still both have a mass of 2 grams each because air isnt matter do you agree or disagree with your cousin eplain why and use the word atoms in your response PLSSS HELP

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

Nan element’s square on the periodic table, the number with the greatest numerical value represents the

When the mercury level in a barometer decreases that atmospheric pressure has