Question

Find the specific heat of a substance that requires 8000 J of energy to heat up 400g by 20 C?

Answer 1

Answer:

$c=1\ J/g^\circ C$

Explanation:

Given that,

Heat required, Q = 8000 J

Mass, m = 400 g

The change in temperature, $\Delta T = 20^{\circ}$

The heat required due to change in temperature is given by :

$Q=mc\Delta T\\\\c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{8000 }{400\times 20}\\\\c=1\ J/g^\circ C$

So, the specific heat of the substance is $1\ J/g^\circ C$