How many molecules are in a 0.10 mole sample of SO2

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

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

What atom has the largest atomic radius