calculate q , w , and ∆ E for melting 1.00 mol of ice at 0 ◦ C and 1.00 atm pressure

2 answers

q = mass ice x dHfusion.

w = -p*delta V.
Calculate volume ice at zero C. I would look up the density of ice at zero C and liquid H2O at 0C, then solve for volume for 18.015g ice and water. I found that here of (0.9167 g/cc for ice @ 0C vs 0.9998 @ 0Cg/cc for liquid water).
http://en.wikipedia.org/wiki/Ice
That will give you delta V from which you can solve for w (in L*atm). Multiply by 101.325 to change to Joules.
Then E = q + w.
NOTE: The volume of ice is greater than the volume of liquid water. Watch the sign.
Calculate the enthalpy change upon converting 1.00 mol of ice at -25°C to water vapor (steam) at 125°C under a constant pressure of 1 atmosphere.