When 1414 J of heat energy is added to 38.7 g of ethanol, C2H6O, the temperature increases by 14.9 °C. Calculate the molar heat capacity of C2H6O?

1 Answer
zhirou
Mar 9, 2018

#"2.45J/g°C"#.

Explanation:

To answer this question, we'll have to use this equation:

#q=mxxCxxDeltaT#

Where #q# is heat, #m# is mass in grams, #C# is specific heat capacity, and #DeltaT# is change in temperature.
We can rearrange this equation to have #C#, which is what we want, alone on one side:

#C = q/(mxxDeltaT)#

The question already gives us #q#, #m#, and #DeltaT#, so we can just plug in these values and solve! :)

#C = "1414J"/("38.7g"xx"14.9°C")#

#C = "2.45J/g°C"#

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