Coffee Metal Sign
Posted in Lighted Signs on 05/24/2001 09:54 am by admin
Chemistry Help?
Calorimetry In a sample of 12.3 g of an unknown metal is heated to 94.0 oC and placed in a calorimeter cup of coffee contains 113 g of water at a temperature of 20.45 oC. After the metal cools, the final temperature of the metal and water is 23.35 oC. Calculate the heat capacity specific (J / GOC) of the metal, assuming that no heat escapes around. (The specific heat capacity of water = 4.184 J / GOC) The heat of combustion is the power generation, the human body "burns" glucose C6H12O6, whose molecular weight = 180,156 g / mol. Recording of 5.23 g of glucose yields 20.3 kJ heat. What is the molar heat of combustion of glucose (kcal / mol)? (Remember to include the correct sign.) Thank you very much!
I had a specific heat equal to 1.58 J / GC equation:-Q (lost) = Q (gained) in this case, the ear canal loses heat and water is the winning side. q = mass x specific heat x change temperature equation is as follows: - (12.3) (c) (23.35-94.0) = (113) (4.184) (23.35-20.450 solve for c = 1.58 sorry for my lack of units
SNOWMEN HUNTERS Ep 25: Everett Gets His Stupid Back
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