Suppose two chemicals are reacted together. It takes 1000 kJ of energy to break the bonds of the reactants and 850 kJ of energy are released by the formation of the products. What is the change in energy for the reaction?
A. 0 kJ
B. 150 kJ
C. -150 kJ
D. 850 kM

Question

Suppose two chemicals are reacted together. It takes 1000 kJ of energy to break the bonds of the reactants and 850 kJ of energy are released by the formation of the products. What is the change in energy for the reaction?
	A.	0 kJ
	B.	150 kJ
	C.	-150 kJ
	D.	850 kM

anonymous · Answer

ugh!

immings · Answer

Hi, Since the activation energy was used to break the bond and  there is energy that was released. The change in energy is -150kJ

anonymous · Answer

thnk u ..nd Hi

immings · Answer

I should further elaborate, the change in energy is -150 because that is the amount lost / changed from the inital