Respuesta :
Answer:
Explanation:
(1)
The amount of heat required to raise the temperature of a substance of unit mass through unit degree.
Let Q be the amount of heat is given to the mass m of a substance so that its temperature is rises by ΔT.
Q ∝ m
Q ∝ ΔT
So, Q = m x c x ΔT
Where, c is called the specific heat of the substance.
The unit of specific heat is Joule per Kg per degree C.
The specific heat of a substance depends on the nature of substance and the rise in temperature of the substance.
(2)
Let a substance of mass m2 , having specific heat c and the initial temperature T2 is mixed with water at initial temperature T1 and the final temperature of mixture is T. Let w be the water equivalent of the calorimeter.
According to the principle of calorimetry
Heat lost by the hot body = Heat gained by the cold body
[tex]m_{2}\times c\times(T_{2}-T)=(m_{1}+w)(T-T_{1})[/tex]
[tex]c=\frac{(m_{1}+w)(T-T_{1})}{m_{2}\times(T_{2}-T)}[/tex]
