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Q: heat of fusion ( No Answer,   2 Comments )
Question  
Subject: heat of fusion
Category: Science > Chemistry
Asked by: anais35-ga
List Price: $4.00		 Posted: 29 Mar 2005 17:03 PST
Expires: 28 Apr 2005 18:03 PDT
Question ID: 502321 
The heat of fusion of lithium metal is 550cal/mol. How much heat in
kilocalories is required to melt 175g of lithium?
Answer  
There is no answer at this time.

Comments  
Subject: Re: heat of fusion
From: osmium-ga on 29 Mar 2005 18:24 PST		  
Atomic weight of lithium is 6.94. 
A mole of lithium weighs 6.94 g.
175/6.94 = 25.2 moles of lithium.
25.2mol x 550 cal/mol = 13,860 cal or 13.9 kilocalories.
Subject: Re: heat of fusion
From: them-ga on 15 Apr 2005 15:58 PDT		  
plus the calories needed to get the temparature of the metal to the
melting temperature....
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