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Chemistry
OpenStudy (anonymous):

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

OpenStudy (anonymous):

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"

OpenStudy (anonymous):

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

OpenStudy (anonymous):

i think it's b

OpenStudy (anonymous):

the fuel give energy not take it

OpenStudy (anonymous):

@Silent_Sorrow do you agree?

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