Use the observation in the first column to answer the question in the second column. observation question Which has a higher vapor pressure? At 1 atm pressure, Substance C Substance C boils at 145. °C and Substance D Substance D boils at 128. °C. Neither, C and D have the same vapor pressure. It's impossible to know without more information. Which has the higher boiling point? Substance A The enthalpy of vaporization of Substance A is smaller Substance B than that of Substance B. Neither, A and B have the same boiling point. It's impossible to know without more information. Which has a higher boiling point? At 77 °C, substance E has a vapor pressure of 145. torr and Substance F Substance E Substance F has a vapor pressure of 115. torr. Neither, E and F have the same boiling point. It's impossible to know without more information. O O O O
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.
Understanding the connection between vapour pressure, boiling point, and enthalpy of vaporisation.
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