What is the energy change that will occur when 25.5 grams of oxygen gas (O2) react with excess methane (CH4) according to the reaction below?

CH4 + 2 O2 CO2 + 2 H2O H = -889 kJ/mol

354 kJ of energy will be given off by the reaction

354 kJ of energy will be absorbed by the reaction

708 kJ of energy will be given off by the reaction

708 kJ of energy will be absorbed by the reaction

Question

What is the energy change that will occur when 25.5 grams of oxygen gas (O2) react with excess methane (CH4) according to the reaction below?

CH4 + 2 O2  CO2 + 2 H2O H = -889 kJ/mol

 354 kJ of energy will be given off by the reaction

 354 kJ of energy will be absorbed by the reaction

 708 kJ of energy will be given off by the reaction

 708 kJ of energy will be absorbed by the reaction

anonymous · Answer

@Mertsj

mertsj · Answer

You don't even have an equation.  You not only have to have an equation...it must be balanced.  And if this is a chemistry question, what is it doing in the biology section?

anonymous · Answer

the equation is the first one and idk

anonymous · Answer

how do i put it in the chemistry section

mertsj · Answer

That is NOT an equation.  All that says is that you have energy released by the reaction.  It doesn't show what the reaction is.  I feel fairly confident that you have not posted the question correctly which tells me you don't know what is being asked.  You should make sure you know what you are trying to find and then we can talk about how to find it.

anonymous · Answer

i copy and pated it but okay.

anonymous · Answer

pasted

mertsj · Answer

So now you should compare what pasted with what you thought you pasted.  I have copied and pasted lots of stuff that didn't paste accurately.

aaronq · Answer

start by converting the grams to moles