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)?

1 Answer
Sep 29, 2017

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...