CCl₂F2 is considered to be environmentally safe and is used as a refrigerant. The heat of vaporization of CCl₂F2 is 289 J/g. What mass of this substance must evaporate in order to freeze 2 moles of water initially at 20°C? The heat of fusion of water is 334 J/g and the specific heat of water is 4.18 J/g-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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