The normal boiling point of mercury (Hg) is 356.7 °C. What is the vapor pressure of mercury at 326.0 °C in atm? (∆Hvap = 58.51 kJ/mol) The normal boiling point of a liquid is 282 °C. At what temperature (in °C) would the vapor pressure be 0.750 atm? (∆Hvap = 28.5 kJ/mol) What amount of heat (in kJ) is required to convert 21.7 g of an unknown liquid (MM = 83.21 g/mol) at 19.2 °C to a gas at 93.5 °C? (specific heat capacity of liquid = 1.58 J/g･°C; specific heat capacity of gas = 0.932 J/g･°C; ∆Hvap = 22.5 kJ/mol; normal boiling point, Tb = 57.3°C)
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.
The normal boiling point of mercury (Hg) is 356.7 °C. What is the vapor pressure of mercury at 326.0 °C in atm? (∆Hvap = 58.51 kJ/mol)
The normal boiling point of a liquid is 282 °C. At what temperature (in °C) would the vapor pressure be 0.750 atm? (∆Hvap = 28.5 kJ/mol)
What amount of heat (in kJ) is required to convert 21.7 g of an unknown liquid (MM = 83.21 g/mol) at 19.2 °C to a gas at 93.5 °C? (specific heat capacity of liquid = 1.58 J/g･°C; specific heat capacity of gas = 0.932 J/g･°C; ∆Hvap = 22.5 kJ/mol; normal boiling point, Tb = 57.3°C)
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