You are given an unknown metal. You obtain the following data for the unknown metal: The...
You are given an unknown metal. You obtain the following data for the unknown metal: The mass is 3.50kg and when 1.319 x 10^4J of heat is added to this sample, (initially at a temperature of 21.33 C) the temperature increases to 48.25C. Identify the unknown metal.
Metal Specific Heat (J/g C)
Aluminum 0.902
Copper 0.385
Gold 0.129
Iron 0.450
Zinc 0.140
Lead 0.132
Homework Answers
Change in temperature ∆T = 48.25-21.33 = 26.92C,
Mass = 3.5kg = 3500g
Heat = specific heat*mass of metal*∆T
1.319*10^4 = specific heat*3500*26.92
Specific heat = 1.319*10^4/94220 = 0.1399 = 0.14 J/g
So, the metal is lead (Pb).
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