Q 8.53

[Brian Devlin 3B]

Just a general question
On (b) its asks to "Calculate the internal energy change, deltaU, for the reaction of 1.00 mol CO(g)...
When finding "q" I thought the answer would be in kJ, but the solution proceeds to make it kJ/mol....why?

[Desiree Martin 2A]

In the equation, it asks you to calculate the internal energy for the reaction of one mole. Therefore, when you are given 1.40 grams of carbon monoxide, you must convert the grams to moles. Then from here, you take the total heat in kj, and divide by moles. Therefore you're final answer is in kj/mol. The fact that they asked for one mole, and provided you with grams, leads to the conclusion that you must convert. I hope this is helpful.