Diethyl ether (CH3CH2OCH2CH3) was one of the first chemicals used as an anesthetic. At 34.6°C, diethyl ether has a vapor pressure of 760 torr, and at 17.9°C, it has a vapor pressure of 400 torr. What is the AH of vaporization for diethyl ether?

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A:

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Q: use the proper amount of sig figs a. (21.0954×2.76)+327.29 b. (84.8−22.446)÷0.0041

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Q: 5. What is meant by the phrase “reaction to completion”?

A: The phrase “reaction to completion” defines

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A: Density of a substance is calculated as shown below: Density = Mass / Volume

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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.