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Topic: Finding the energy of heat required for vaporization  (Read 3280 times)

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Offline goosefraba

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Finding the energy of heat required for vaporization
« on: August 29, 2010, 05:28:42 PM »
I need some help with this problem:

They enthalpy of vaporization of liquid mercury is 59.11 kJ/mol. What quantity of energy as heat is required to vaporize 1.25 mL of mercury at 357 degrees C, its normal boiling point? (the density of mercury is 13g/mL)

Any help with this would be greatly appreciated.
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Offline opti384

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Re: Finding the energy of heat required for vaporization
« Reply #1 on: August 29, 2010, 05:38:28 PM »
A little hint: how many mols of mercury are in 1.25 ml?
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Offline goosefraba

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Re: Finding the energy of heat required for vaporization
« Reply #2 on: August 29, 2010, 06:03:33 PM »
I'm really not quite positive, I'm very sorry. I'm not very good with chemistry. Is it 2.7e-23 mol?
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Offline goosefraba

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Re: Finding the energy of heat required for vaporization
« Reply #3 on: August 29, 2010, 06:29:05 PM »
wow, nevermind, haha. I got it, thank you for the help, sorry for the newby question.
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