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Q:

# What is a practical application of Boyle's law?

A:

One practical application of Boyle's law is drawing fluid into a syringe. Pulling back on the plunger increases the interior volume of the syringe and reduces its pressure. The fluid outside the syringe is sucked into the barrel until the interior and exterior pressure are balanced.

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Boyle's law states that the volume and pressure of a gas or liquid remain constant provided the substance's temperature remains the same. This law, which was first declared by Robert Boyle in the 17th century, is vitally important in engineering applications such as engine design. Its formula is V1/V2=P2/P1 (at constant temperature), where V1 is the initial volume, V2 is the modified volume, P1 is the starting pressure and P2 is the modified pressure.

The law most closely related to Boyle's law is Charles' law, or the "law of volumes," which is the work of French scientist Jacques Charles. It describes the relationship between volume and temperature. Both Boyle's law and Charles' law are gas theories that describe the behavior of a hypothetical "ideal" gas. In practice, however, both also apply to liquids. Boyle's law is sometimes called Mariotte's law, a reference to the French researcher who discovered the same principles 14 years after Boyle's publication. This naming convention is popular in France and other European nations.

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The Law of Octaves is about the patterns of elements in the Periodic Table, stating that when elements are aligned according to their atomic weight, every eighth element shares similar properties. For example, hydrogen, fluorine, chlorine, bromine and iodine are all on the same interval.

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The law of floatation states that when a body is wholly or partially immersed in a liquid, it floats if the weight of the liquid displaced is equal to the weight of the body. If the weight of the liquid displaced is more than the weight of the body, it sinks.

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Dalton's law states that the total pressure of the gas mixture in a container is equivalent to the sum of the partial pressures of the individual gases in that container. Dalton's law only refers to nonreacting gases and is related to the ideal gas law, which predicts how the pressure, volume and temperature of a gas is related to the amount of the gas present.