Question

What quantity of heat is required to raise the temperature of 460g of aluminum from 15C to 85C?

Answer 1

Q = 28.9 kJ

Step-by-step explanation:

Given that,

Mass of Aluminium, m = 460 g

Initial temperature,
`T_i=15^(\circ) C`

Final temperature,
`T_f=85^(\circ)`

We know that the specific heat of Aluminium is 0.9 J/g°C. The heat required to raise the temperature is given by :

`Q=mc\Delta T\\\\Q=mc(T_f-T_i)\\\\Q=460\ g* 0.9\ J/g^(\circ) C* (85-15)^(\circ) C\\\\Q=28980\ J\\\\\text{or}\\\\Q=28.9\ kJ`

So, 28.9 kJ of heat is required to raise the temperature.