The vapor pressure, P, of a certain liquid was measured at two temperatures, T. The data is shown in the table. T(K) P (kPa) 275 3.29 675 7.84 Keep the pressure units in kilopascals. If you were going to graphically determine the enthalpy of vaporizaton, AHvap for this liquid, what points would you plot? To avoid rounding errors, use three significant figures in the x-values and four significant figures in the y-values. point 1: x = point 2: x = rise = Determine the rise, run, and slope of the line formed by these points. slope = What is the enthalpy of vaporization of this liquid? AHvap= point 1: y = J/mol point 2: y = run =

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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.