Question

A piece of aluminum requires 4,000 J of energy to change

from 68°C to 110° C. How much aluminum is there?

need help

Answer 1

Mass, m = 105.58 g

Step-by-step explanation:

We have,

Heat required in aluminium to change the temperature from 68°C to 110°C. It is required to find the mass of aluminium.

Concept used : Specific heat capacity

Solution,

The heat required to raise the temperature is given by :

`Q=mc\Delta T`

c is specific heat capacity, for Aluminium, c = 0.902 J/g-°C

`m=(Q)/(c\Delta T)\\\\m=(4000\ J)/(0.902\ J/g^(\circ) C* (110-68)^(\circ) C)}\\\\m=105.58\ g`

So, the mass of aluminium is 105.58 grams.