Question

How many kilojoules of heat are released when 38.6g of CH4 reacts completely with O2 to form CH3OH at constant pressure?
2CH4 + O2 ==> 2CH3OH
dHrxn = (n*dHf products) - (n*dHf reatants). You will need to look up the values for delta Hoformation for CH4 and CH3OH. Let's call that value comb.

comb x (38.6g/2*molar mass CH4) = ?
23kJ
303 kJ

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