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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: Tom on June 29, 2004, 12:38:46 PM

Title: Heart of Fusion
Post by: Tom on June 29, 2004, 12:38:46 PM

My calculation for the heart of fusion in a kJ/mol if 10.0 g of solid chromium which absorbs 2.82 x 103 J of heat in melting came out at 34.3 kJ/mol. Can anyone double check this for me?
      

Title: Re:Heart of Fusion
Post by: AWK on June 30, 2004, 02:22:33 AM

1 Mole of chromium weights 51.996 g.
Hence heat of fusion is (51.996/10.0)x2.82 kJ=14.7 kJ/mol (real value is 16.9)

Title: Re:Heart of Fusion
Post by: Tom on June 30, 2004, 08:32:16 AM

Thanks, I caught what I did, I had an incorrect number for the mole.