Refer to the following phase diagram (not to scale!) for nitrogen : 33.5 1.00 atm 0.127 63.1 63.2 77.4 126.0 T Kelvin At a pressure of 1 atm, the temperature 63.2 K is called the The normal boiling point for N2 is at The triple point pressure for N, is | of N2 . K atm The critical pressure for N, is 33.5 atm. At temperatures above 126 K and pressures above 33.5 atm, N2 is a N2 is a N2 is a N, is a v at 26.4 atm and 57.5 K. v at 1.00 atm and 75.1 K. v at 0.127 atm and 83.0 K
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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