20.0 g of CH3OH is frozen solid at -98.0 degrees C. What is the total energy required to melt it, warm the liquid to its boiling point, and then just vaporize it?

1 answer

q1 = heat to raise T from original point to melting point.
q1 = mass x specific heat solid x (Tfinal-Tinitial)

q2 = heat to melt solid at melting point.
q2 = mass solid x deltaHfusion

q3 = heat to raise T of liquid to boiling point.
q3 = mass x specific heat liquid x (Tfinal-Tinitial)

q4 = heat to vaporize liquid to vapor.
q4 = mass x deltaHvaporizationi.

Total = q1+q2+q3+q4
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