What's the MW of C6H5NH2? You will need it.
If ΔHrxn=qrxn and q= C*ΔT, then C =j/°c and q=j. Then doesn't ΔH = j instead of J/moles?
You are confusing people by using non standard notation. Joules ≡ J and never j.
Even better practice is to always define your notation.