In the following answer for the given question how specific heat of aluminium is equal to...
In the following answer for the given question how specific heat of aluminium is equal to 900J/kg K?
A 5-kg aluminum block sits in your lab, which is at 21 C. You wish to increase the temperature of the block to 50 C. How much heat in joules must be supplied?
Q=msdT
specific heat for Al=900J/Kg K
Q=5*900*(50-21)
Q=130.5*10^3J
Homework Answers
Solution:
Specific heat is defined as amount of energy added in the form of heat to one unit of mass of substance in order to increase in temperature of one unit. Every metals having its own value of specific heat value. Its unit is j/kg k or kJ/kgK. Using calorimeter specific heats of different materials are determined.
The value of specific heat for aluminium is equal to 900 J/kg K at specified standard conditions of pressure and temperature. It is standard value for aluminium which is directly taken for calculation. No any calculations or specifications is needed for the specific heat calculation it is directly calculated from calorimeter. Hence in the given answer direct value of specific heat is used to calculate heat supplied.
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