Convert grams to moles and use Avogadro's number 6.022x10tho the 23rd power. Hope this helps
The initial state of the compound Br2 is liquid. The final
state is then solid. We know for certain that the liquid state has higher energy
as compared to solid state. Due to this fact, Br2 must release energy to be in
solid form. Therefore, the change in enthalpy is:
ΔH = -7.4 kcal/nil
