How much energy (kJ) would be required to convert 17.33 g of Pb(s) at its freezing point (327.5 °C) to the boiling point (1740 °C) and then to completely vaporize it? Thermodynamic quantity Value Heat capacity 26.73 J/g*°C Heat of fusion 4.774 kJ/mol Heat of vaporization 195.6 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.
How much energy (kJ) would be required to convert 17.33 g of Pb(s) at its freezing point (327.5 °C) to the boiling point (1740 °C) and then to completely vaporize it?
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|
Value |
|
Heat capacity |
26.73 J/g*°C |
|
Heat of fusion |
4.774 kJ/mol |
|
Heat of vaporization |
195.6 kJ/mol |
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How was the j/g found at the beginning of the conversion mechanism. The the number is just kind of there with no explanation.
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