chris logan Posted June 9, 2013 Share Posted June 9, 2013 how do you calculate specific heat capacity? if you can work an example that would be great! Link to comment Share on other sites More sharing options...
swansont Posted June 9, 2013 Share Posted June 9, 2013 What is specific heat capacity? What are the units? That should tell you something. Link to comment Share on other sites More sharing options...
chris logan Posted June 10, 2013 Author Share Posted June 10, 2013 it should tell me that i dont understand the concept of specific heat capacity hence i'm on the internet like a lost soul looking for help Link to comment Share on other sites More sharing options...
MonDie Posted June 10, 2013 Share Posted June 10, 2013 (edited) joule is a unit of energy gram is a unit of mass °C and K are units of temperature Certain things need to absorb more or less heat to have an equal temperature change. Specific heat capacity is the joules per gram required to raise the temperature by 1°C. "Per gram" because the amount of substance matters (e.g. twice as much substance means twice as much heat for the same ΔT). Edited June 10, 2013 by Mondays Assignment: Die Link to comment Share on other sites More sharing options...
swansont Posted June 10, 2013 Share Posted June 10, 2013 it should tell me that i dont understand the concept of specific heat capacity hence i'm on the internet like a lost soul looking for help You don't even know (or can't find) the units? As MA:D posted, it's the energy required to raise the temperature a certain amount, per unit mass if it's specific heat capacity. Not all substances require the same energy, because they have internal degrees of freedom, i.e. vibrations and rotations of parts of the molecule. Ideal gases don't have these ways of storing energy. The complexity and composition of the molecule will affect the heat capacity. Link to comment Share on other sites More sharing options...
chris logan Posted June 10, 2013 Author Share Posted June 10, 2013 ΔT is used to represent the temperature difference in kelvin (for heat capacity c = energy change divided by temperature difference in kelvin.) can the formula use degrees celsius or do you HAVE to convert to kelvin? Link to comment Share on other sites More sharing options...
MonDie Posted June 11, 2013 Share Posted June 11, 2013 (edited) https://en.wikipedia.org/wiki/Conversion_of_units_of_temperature Will ΔTK = ΔT°C always be true? Hint: It wouldn't work for farenheit. ΔT°F = ΔTK × 1.8 Am I using subscript right? Edited June 11, 2013 by Mondays Assignment: Die Link to comment Share on other sites More sharing options...
swansont Posted June 11, 2013 Share Posted June 11, 2013 ΔT is used to represent the temperature difference in kelvin (for heat capacity c = energy change divided by temperature difference in kelvin.) can the formula use degrees celsius or do you HAVE to convert to kelvin? That's something you should be able to show. Write down the equation for ΔT in ºC and then convert ºC to Kelvin and see what the answer is. Link to comment Share on other sites More sharing options...
chris logan Posted June 11, 2013 Author Share Posted June 11, 2013 oops! i get what you're saying. Link to comment Share on other sites More sharing options...
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