Assessment timer and count assessment items item 8 the following characteristics describe which of these terms? the substance is not uniform in appearance and each part of the mixture contains a combination of different ingredients in different ratios.
a. pure substance

b. solution

c. heterogeneous mixtures

d. homogeneous mixtures

me

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