Question

please help me
Which statement about the following reaction is correct?

CH4 (g) + 2O2 (g) CO2 (g) + 2H2O(l) H = -890 kJ (2 points)
Answer

reacting one mole of oxygen (O2) absorbs 445 kJ of energy

reacting one mole of oxygen (O2) releases 445 kJ of energy

reacting one mole of methane (CH4) absorbs 890 kJ of energy

reacting two moles of methane (CH4) releases 890 kJ of energy

Answer 1

I'd go with the third answer although when I had only read the question my original thought would give an answer of "890kJ of energy (heat) is required to combust 1 mole of methane"

Answer 2

i not sure,but when H<0 i think it releases energy,wich make sense because we have a combustion

Answer 3

i think it's b

Answer 4

the fuel give energy not take it

Answer 5

@Silent_Sorrow do you agree?