two of these statement about elements and atoms are true, and one is false. which statements are true

Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize

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

At element makes up all organic compounds?