Question

How much heat is absorbed by a 45g iron skillet when its temperature rises from 6oC to 21oC?

Answer 1

299.7 J

Step-by-step explanation:

Answer 2

Answer: 299.7 J

Step-by-step explanation:

The heat (thermal energy) absorbed by the iron skillet can be found using the following equation:

`Q=m.C.\Delta T` (1)

Where:

`Q` is the heat

`m=45 g` is the mass of the element (iron in this case)

`C` is the specific heat capacity of the material. In the case of iron is
`C=0.444(J)/(g\°C)`

`\Delta T=T_(f)-T_(i)=21\°C - 6\°C= 15\°C` is the variation in temperature

Knowing this, lets rewrite (1) with these values:

`Q=(45 g)(0.444(J)/(g\°C))(15\°C)` (2)

Finally:

`Q=299.7 J`