6th edition 8.51

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Kathryn 1F
Posts: 66
Joined: Fri Sep 28, 2018 12:19 am

6th edition 8.51

Postby Kathryn 1F » Tue Feb 05, 2019 4:50 pm

The question gives enthalpies of formation in kJ/mol, but then asks for the enthalpy density (enthalpy released per liter). How would I find this? I am given the density of TNT in g/cm^3, but idk how i would use that

Katie Sy 1L
Posts: 57
Joined: Fri Sep 28, 2018 12:18 am

Re: 6th edition 8.51

Postby Katie Sy 1L » Tue Feb 05, 2019 5:05 pm

to find the energy density in kJ/L, divide the amount of energy with the mass of one mole of TNT(227.14 g/mol) and then multiply it by the density of TNT (1.65 g/cm^3)

Ian Marquez 2K
Posts: 66
Joined: Fri Sep 28, 2018 12:16 am
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Re: 6th edition 8.51

Postby Ian Marquez 2K » Tue Feb 05, 2019 9:28 pm

Also, in order to find the energy density per liter, you have to multiply the density which is given by 1.65g/cm^3 by 10^3cm^3/L so your answer and units are correct.


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