[highschoolhelp16]

or is 9.86kJ the energy required to convert the 100g from solid to boiling point?

[UG]

No, 9.86 kJ is the energy needed to convert solid to liquid. Now you need to find how much energy is needed to transform the liquid into gas, because the question states that you want gaseous methanol. I have stated in my previous post how to do this.

[highschoolhelp16]

so the energy needed to convert from liquid to gas should be 110.136kJ?

[UG]

Yes (I am assuming you used the correct H_vap value)

[highschoolhelp16]

so do I need to put these values into my original equation of (100.0g)(.424cal/gc)(337.2k-175.5k)? or was that just completely off track?

[UG]

Yes you add the two values onto whatever you got from (100.0g)(.424cal/gc)(337.2k-175.5k) but you will need to change the units so that they match, either convert kJ into cal or vice versa.

[highschoolhelp16]

So if I get 3,684.58kJ from that equation, I should add 110.14kJ, and 9.86kJ, to get 3768.58kJ total.

[UG]

So if I get 3,684.58kJ from that equation

That seems to be an awfully large number...(check again) but if thats what you got, then adding 110.14 kJ and 9.86 kJ onto it is correct.

[highschoolhelp16]

could the equation be wrong. Im using q=mass*specific heat*delta T

[UG]

Well initally you got 6,877.28 cal, how many kJ is this?

[highschoolhelp16]

I got 3684.58 kJ

[UG]

In thermochemistry 1 calorie is about 4.184 J

http://en.wikipedia.org/wiki/Calorie

[highschoolhelp16]

so 28.75kJ?

[UG]

Well going by your equation (100.0g)(.424cal/gc)(337.2k-175.5k), this should give 6856.08 cal. Then converting to kJ gives 28.69 kJ. But maybe you did some rounding somewhere.

[highschoolhelp16]

You're right I made a calculation error. so 28.69kJ is the heat required to convert 100.0g of solid methanol to gaseous methanol?