Ethyl chloride is sold as a liquid (see photo) under pressurefor use as a local skin anesthetic. Ethyl chloride boils at 12 °Cat atmospheric pressure. When the liquid is sprayed ontothe skin, it boils off, cooling and numbing the skin as itvaporizes. (a) What changes of state are involved in this useof ethyl chloride?(b) What is the boiling point of ethyl chloridein degrees Fahrenheit? (

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A: (a). At 120C, ethyl chloride turns into gaseous form from liquid form. Thus liquid state changes to…

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A: State of matter below its melting point is solid and above its melting point is liquid.

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A: Determine heat released when temperature is reduced from 25oC to 0oC water:

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.