Class 11Physics1 Thermal Properties of Matter: Thermometry, Expansion and CalorimetryHeat Capacity, Specific Heat and Molar Specific Heat
MediumWrite the old and new definition of calorie.
(N/A) The old definition of a calorie is the amount of heat energy required to raise the temperature of $1 \ g$ of water from $14.5 \ ^\circ C$ to $15.5 \ ^\circ C$ at a pressure of $1 \ atm$.
The new definition of a calorie is defined in terms of the Joule,which is the $SI$ unit of energy. One calorie is exactly equal to $4.184 \ J$.
The new definition of a calorie is defined in terms of the Joule,which is the $SI$ unit of energy. One calorie is exactly equal to $4.184 \ J$.
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$500 \ g$ of water is heated from $30^{\circ}C$ to $90^{\circ}C$. What is the change in its internal energy? (Specific heat of water is $4184 \ J \ kg^{-1} \ K^{-1}$)
The specific heat of a substance at temperature $T^{\circ}C$ is given by $C = \alpha T^2 + \beta T + \gamma$. The amount of heat required to raise the temperature of a mass $m \, g$ of the substance from $0^{\circ}C$ to $T_o^{\circ}C$ is .......
Medium
View SolutionThe molar mass of a substance is $50 \, g/mol$. When $300 \, J$ of heat is supplied to a $25 \, g$ sample of this substance,its temperature increases from $30^{\circ}C$ to $50^{\circ}C$. The values of heat capacity and specific heat capacity are,respectively:
Medium
View SolutionDefine molar specific heat and state its $SI$ unit.
Medium
View SolutionWater of mass $5 \ kg$ in a closed vessel is at a temperature of $20^{\circ} C$. If the temperature of the water when heated for a time of $10 \ minutes$ becomes $30^{\circ} C$, then the increase in the internal energy of the water is (Specific heat capacity of water $= 4200 \ J \ kg^{-1} \ K^{-1}$) (in $kJ$)
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