For mercury m.p. -39 degrees C b.p. 357 degrees C Heat of fusion 11.6 J/g @ -39 degrees C Heat of vaporization 292 J/g @ 357 degrees C Specific heat(solid) 0.141 J/g degrees C Specific heat(liquid) 0.138 J/g degrees C Specific heat(gas) 0.104 J/g degrees C Calculate the amount of heat that must be released to convert 20.0 g of mercury vapor at 387 degrees C to liquid mercury at 307 degrees C(in kJ). Also Calculate the enthalpy change (in kJ/mol).
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
For mercury m.p. -39 degrees C
b.p. 357 degrees C
Heat of fusion 11.6 J/g @ -39 degrees C
Heat of vaporization 292 J/g @ 357 degrees C
Specific heat(solid) 0.141 J/g degrees C
Specific heat(liquid) 0.138 J/g degrees C
Specific heat(gas) 0.104 J/g degrees C
Calculate the amount of heat that must be released to convert 20.0 g of mercury vapor at 387 degrees C to liquid mercury at 307 degrees C(in kJ). Also Calculate the enthalpy change (in kJ/mol).
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