Question

How much energy is required to increase the temperature of an object with a mass of 1.5 g from 24 °C to 90 °C if its specific heat capacity is 4.2 J/(°C·g)?

Answer 1

You calculate the amount of energy required by using the specific heat capacity formula.

Explanation:

All we are doing is using the formula for specific heat capacity: `q=mcDeltaT`. Where...
=> `q` is the amount of energy gained or lost in a substance in joules. This is what we're solving for.
=> `m` is the mass of the substance in kilograms.
=> `c` is the specific heat capacity in `J/(kg*^oC)`
=> `DeltaT` is the change in temperature in `x^oC`. This is calculated typically by subtracting the initial temperature from the final temperature.

Now we just sub in the variables accordingly.

`q=mcDeltaT`

`=(1.5)(4.2)(90-24)`

`=415.8`

Therefore, the substance requires `415.8 J` of energy to increase its temperature.

Hope this helps :)

P.S. You didn't really ask a question...