9. Answer the following questions based on the phase diagram shown below. Point B is at 3 atmospheres and 80°C. Temperature (a) What letter corresponds to the critical point? ----- (b) What phase is the substance in @ 1 atm pressure and 23°C (the triangle)? ------- (c) What 2 phases both exist at point E? ------ (d) What phase can this substance never be in at 1 atm pressure? (e) What happens to this substance if it starts at the point indicated by the rectangle and the pressure is increased to 10 atmospheres (at constant temperature)? (f) What happens to this substance if it starts at the point indicated by the triangle and the temperature is increased to the point indicated by the rectangle (at constant pressure)? ---- ----- anseid
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.
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