We will be using the q = m*c*(delta T) equation, which is also known as Specific Heat formula. So our answer will be 21,410 Joules or you can say 21.41 kJ kilojoules (amount of heat required by hexane).
q = m*c*(delta T)
We have to convert this temperature, which is given to us in Celsius, into Kelvins by adding 273.15.
Kelvin = Celsius + 273.15
Kelvin = 48.1 C + 273.15
(K = 321.25 K).
now, delta T is the change in temp. (final temperature minus the initial temperature). so, delta T will be 321.15k-274.15 K.
combine the values and solve,
q = (0.197 kg)*(2.26J/kg*K)*(321.25 K-274.15 K)
q= 21.41kJ.
Specific heat formula given by, Joseph Black. The Scottish scientist Joseph Black, noticed that equal masses of different substances needed different amounts of heat to raise them through the same temperature interval, and, from this observation, he founded the concept of specific heat.
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