Reaction: $\ce{2Al + 3Cl2 → 2AlCl3}$
Answer: We must have either temperature, or the values of P and ΔV in order to calculate ΔE from ΔΗ.
Since ΔH is given, we can use the formula ΔE=ΔH-PΔV to calculate change in internal energy, and only pressure and ΔV are required to calculate ΔΕ. So my question is, why do we need temperature in this question?