This graph shows how the vapor pressure of three liquids varies with temperature: 900- 800 - 700 - 600 - 500 - 400 300. 200 benzene hexane 100 trichloroethylene 50 60 70 80 90 temperature, °C Use the graph to answer the following questions: Which liquid is the most volatile? most volatile: choose one Which is the least volatile? least volatile: choose one benzene: What is the normal boiling point of each liquid? Note: your answer must be within 1°C of the exact answer to be graded correct. hexane: °C trichloroethylene: more Suppose a beaker of hexane is put inside a sealed tank containing hexane gas at 57. degree C and 805. torr. After ten minutes, will there be more liquid in the beaker, less liquid, or the same amount? less the same vapor pressure, torr

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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.