Calculate the amount of heat needed to melt 118. g of solid hexane and bring it to a temperature of 63.2 C. Be sure your answer has a unit symbol and the correct number of significant digits.

Answer 1

We need to know several things to answer this. You should supply such information so that we don't have to look it up. Just a note for future postings.

We need:

molar mass hexane = 86.2 g/mol

melting point of hexane = -95ºC

specific heat of solid hexane - can't readily find it on Google

∆Hfusion = 13 kJ/mol

specific heat of liquid hexane 265 J/molº

Since I can't find the specific heat of solid hexane, I can't proceed with answering the question. If you have that value, please re-submit the question. Also include any other values provided with the question.

Use q = mC(_s)∆T + m∆Hfusion + mC(_l)∆T