How much heat (in Joules) is needed to raise the temperature of 257g of ethanol (cethanol=2.4 J/g°C) by 49.1°C?

30284.88J

Explanation:

Given parameters:

Mass of ethanol  = 257g

Specific heat capacity of ethanol  = 2.4J/g°C

Temperature change  = 49.1°C

Unknown:

Amount of heat  = ?

Solution:

The quantity of heat need to cause a temperature change on a body is given as;

               H  =  m c Δt

where  m is the mass

             c is the specific heat capacity

            Δt  is the change in temperature

All units in proper dimensions. Input the parameters and solve for H;

       H  = 257 x 2.4 x 49.1

        H  = 30284.88J

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