Question

How much heat is absorbed by a 75g iron skillet when it’s temperature rises from 5c to 20c?

Answer 1

Answer:
`Q=499.5 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 (absorbed)

`m=75 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)=20\°C - 5\°C= 15\°C` is the variation in temperature

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

`Q=(75 g)(0.444(J)/(g\°C))(15\°C)` (2)

Finally:

`Q=499.5 J`