consult: Can these two units of heat of vaporization be converted?
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This post was last edited by Wang Mingyue on 2009-8-20 14:17. The heat of vaporization of water is 40.8 kJ/mol, and another data is 2260 kJ/kg. How are these two figures converted? Reply to the second floor: The molar mass of water is 18 kg/kmol!
Can be converted! That is, the mass (m) unit: Convert Kg to unit of material mass (n): mol! at room temperature and pressure: m/n=18Kg/mol (that is, the formula weight of water). To convert these two data, it is necessary to find the formula weight under water vaporization conditions. The former can be converted into the latter by multiplying this formula.
This post was last edited by Wang Mingyue on 2009-8-20 14:22 # bingfeng1203 But the conversion result of multiplying 40.8 by 18 is 734.4, not 2260. Is this conversion method wrong?
40.8 kilojoules/mol=40.8 kilojoules/18g=2.267 kilojoules/g=2267 kilojoules/kg
This post was last edited by Wang Mingyue on 2009-8-20 17:35 Oops, yes! Division should be used. I fainted. It seems that you can't do it without being careful. Thank you to the two people above.