[banana89]

Hi, I need some help figuring out how to solve this problem:

Find the molar enthalpy of vaporization for a substance, given that 3.21 mol of the substance absorbs 28.4 kJ of energy as heat when the substance changes from a liquid to a gas.

At this point, I'm pretty sure the formula  q=n•?Hvap  comes into play, but I'm completely lost as to how and where.
Thanks!

[Donaldson Tan]

At this point, I'm pretty sure the formula q=n•?H_vap comes into play, but I'm completely lost as to how and where.

You are given q and n. Find ?H_vap. Assume the liquid is at saturated state.