Question

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

Answer 1

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

Step-by-step 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=(Q)/(m\Delta T)\\\\c=(8000 )/(400* 20)\\\\c=1\ J/g^\circ C`

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