The molar mass of a substance is 50 , g/mol. | vedclass

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Question

(A) Given: Mass $m = 25 \, g = 0.025 \, kg$,Heat $Q = 300 \, J$,Change in temperature $\Delta T = 50^{\circ}C - 30^{\circ}C = 20^{\circ}C$.First,calcu

Vedclass · Accepted Answer

$15 \, J/^{\circ}C, 600 \, J/kg^{\circ}C$

Vedclass · Answer

(A) Given: Mass $m = 25 \, g = 0.025 \, kg$,Heat $Q = 300 \, J$,Change in temperature $\Delta T = 50^{\circ}C - 30^{\circ}C = 20^{\circ}C$.First,calculate the specific heat capacity $(s)$:$Q = ms\Delta T \implies s = \frac{Q}{m\Delta T} = \frac{300 \, J}{0.025 \, kg 	imes 20^{\circ}C} = \frac{300}{0.5} = 600 \, J/kg^{\circ}C$.Next,calculate the heat capacity $(C)$:$C = ms = 0.025 \, kg 	imes 600 \, J/kg^{\circ}C = 15 \, J/^{\circ}C$.Thus,the heat capacity is $15 \, J/^{\circ}C$ and the specific heat capacity is $600 \, J/kg^{\circ}C$.

The 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:

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