Answer:
May be boiling is the answer because all other options are a proper chemical changes.
Answer:
No
Explanation:
Petroleum cant be mixed with water coz petroleum is less dense than water so petroleum will float on water.
Answer:
Indirect. I don't think it's cycling and it's not direct or constant
Answer:
-484kJ
Explanation:
Carry out bond energy calculation
[6(C-H) + (C=O) +2(C-C)] - [(O-H) +7(C-H)+ (C-O) +2(C-C)]
Substitute the bond energy values = -484kJ
