Fill in the blanks:
$(i)$ The unit of heat capacity is ......... .
$(ii)$ Heat capacity is a ......... property of matter.
$(iii)$ The amount of heat required to raise the temperature of $1 \ mol$ of a substance by $1^{\circ} C$ is called ......... .

State the units of specific heat capacity and molar heat capacity.

The heat required to raise the temperature of a body by $1 \, K$ is called

The heat required to raise the temperature of $54 \ g$ of aluminium from $40^{\circ}C$ to $60^{\circ}C$ in $J$ is (molar heat capacity of aluminium in this temperature range is $24 \ J \ mol^{-1} \ K^{-1}$; atomic weight of $Al$ is $27$).

$A_{(g)} \to 2B_{(g)}$; $\Delta_rH = 20 \ kJ/mol$ at $300 \ K$. If $C_{p,m}(A) = 20 \ J \ K^{-1} \ mol^{-1}$ and $C_{p,m}(B) = 5 \ J \ K^{-1} \ mol^{-1}$,which of the following statements is correct?

$A$ piece of metal weighing $100 \, g$ is heated to $80^{\circ} C$ and dropped into $1 \, kg$ of cold water in an insulated container at $15^{\circ} C$. If the final temperature of the water in the container is $15.69^{\circ} C$,the specific heat of the metal in $J / g \cdot ^{\circ} C$ is