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?
0 kJ
B. 150 kJ
C. -150 kJ
D. 850 kM

Answer 1

0 kJ is letter A

Answer 2

what do you think? @pksamuel19

Answer 3

itz C i guess so

Answer 4

be sure

Answer 5

u make meh sure then?

Answer 6

I think it's 150kj.

Answer 7

Yeah I had already chosen 150 kJ but I just wanted to make sure.

Answer 8

may be.. m nt sure

Answer 9

see there is a '150' difference @smartimissi

Answer 10

ok

Answer 11

Finaly!!