Posted by Alex on Thursday, March 8, 2012 at 6:40pm.
It would have helped to give the data below. Here is how you do the problem.
I assume there is a density. Use the density to calculate the mass. mass -= volume x density.
Then for heat used there are two formula to use.
Within a phase you use
mass x specific heat x (Tfinal-Tinitial)
For example, for liquid ethanol between the freezing point and boiling point you will use
mass ethanol x specific heat ethanol x (b.p. temp - freezing point temp).
Then for the change of phase use
mass ethanol x heat fusion at the melting/freezing point or
mass ethanol x heat vaporization at the boiling point.
Then add all of the heats together for the total.
Post your work if you get stuck.
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