Posted by steph on Sunday, November 4, 2012 at 10:30pm.
q1 = heat to raise T from 23.0C to 327 C.
q1 = mass Pb x specific heat Pb x (Tfinal-Tinitial)
q2 = heat to melt Pb
q2 = mass Pb x heat fusion.
Total = q1 + q2
I note you have mass in grams in specific heat (not listed) in J/g*C so that's ok. However, when you go to the melting stage, you have mass in grams and heat fusion in kJ/mol. I would change heat fusion to J/g*C. When you finish adding q1 and q2 the answer will be in joules, convet that to kJ.
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