Question

Use the reaction equation and bond energies to answer the question

2H20 – 2H2 + O2
H-O: 467 kJ/mol
H-H: 432 kJ/mol
O=0: 495 kJ/mol
What is the total energy of the reaction? Is this an endothermic or exothermic reaction?


A 509 kJ/mol, exothermic
B -509 kJ/mol, exothermic
C 509 kJ/mol, endothermic
D -509 kJ/mol, endothermic

Answer 1

509 kj/mol endothermic

i just took the test and got it right.

Step-by-step explanation:

Answer 2

Answer: 509 kj/mol, endothermic

Explanation: just took the test