Question

How much heat is needed to raise the temperature of 8g of water by 15oC?

Answer 1

Answer: 502.08 J

Step-by-step explanation:

The heat (thermal energy) needed in to raise the temperature in a process can be found using the following equation:

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

Where:

`Q` is the heat

`m=8 g` is the mass of the element (water in this case)

`C` is the specific heat capacity of the material. In the case of water is
`C=4.184(J)/(g\°C)`

`\Delta T=15\°C` is the variation in temperature (which is increased in this case)

Knowing this, let's rewrite (1) with these values:

`Q=(8 g)(4.184(J)/(g\°C))(15\°C)` (2)

Finally:

`Q=502.08 J`