Gas Laws Essay

2470 words - 10 pages

Gas Laws

Since the days of Aristotle, all substances have been classified into one of three physical states. A substance having a fixed volume and shape is a solid. A substance, which has a fixed volume but not a fixed shape, is a liquid; liquids assume the shape of their container but do not necessarily fill it. A substance having neither a fixed shape nor a fixed volume is a gas; gases assume both the shape and the volume of their container. The structures of gases, and their behavior, are simpler than the structures and behavior of the two condensed phases, the solids and the liquids

Pressure and the Law of Boyle

Quantitative measurements on gases were first made in a rational manner by the English chemist Robert Boyle (1627 - 1691). The instruments used by Boyle to measure pressure were two: the manometer, which measures differences in pressure, and the barometer, which measures the total pressure of the atmosphere.

A manometer is simply a bent piece of tubing, preferably glass with one end closed.

When the liquid level in both arms is the same, the pressure of the sample of gas inside the closed end must equal the pressure of the external atmosphere since the downward force on the two columns of liquid is then equal. When the liquid levels are unequal, the pressures must differ. The difference in pressure can be measured in units of length of the vertical column of liquid. The mm Hg, or its modern version the torr, originated in this use of the manometer. Mercury is particularly convenient for use in manometers (and barometers) because at room temperature it has low vapor pressure, does not wet glass, and has a high density. Other liquids such as linseed oil or water have also been used in manometers.

The barometer is a device for measuring the total pressure of the atmosphere. A primitive barometer can easily be constructed by taking a glass tube about a meter long, sealing one end, filling the tube completely with mercury, placing your thumb firmly over the open end, and carefully inverting the tube into an open dish filled with mercury. The mercury will fall to a height independent of the diameter of the tube and a vacuum will be created above it.

The height of the mercury column will be the height which the atmospheric pressure can support. The standard atmospheric pressure, one atmosphere (atm), is 760 mm Hg but the actual atmospheric pressure varies depending upon altitude and local weather conditions. For this reason barometers can be used to help predict the weather. A falling barometer indicates the arrival of a low-pressure air system, which often means stormy weather. A rising barometer indicates the arrival of a high pressure air system, and that often means clear weather.

While mercury is again the most convenient liquid for use in barometers it is by no means the only liquid which can be used. Preparation of a water barometer and many of the early barometers did use water.

With the manometer...

Find Another Essay On Gas Laws

History of Capital Punishment in America

921 words - 4 pages most controversial issues the majority of people have a firm stance, either supporting or opposing. The history of the death penalty in the United States has fluctuated greatly over time. In 1608 the first victim of Capital Punishment was executed. Captain George Kendall was sentenced to death and executed for espionage. Shortly after in Virginia Governor Sir Thomas Dale launched the Moral, Devine, and Martial Law. These laws called for the

Fracking is Ethical Essay

754 words - 4 pages the environmental risks, they will feel a lot more secure if natural gas companies disclose some information. As Larry Kahaner states, “What some shareholders – at least those who put the question before yesterday’s meetings – and others want is for companies to issue full disclosure about individual fracking operations and the chemicals used during the process. Some companies counter that they already abide by environmental laws and regulations

Aerodynamics Q&A

1546 words - 6 pages a thrust. These three elements are related to each other under certain conditions. The conditions within which these elements are related can be analyzed by using several gas laws. One of these is Charles gas law which states that the volume of a gas is directly proportional to its temperature at constant pressure. This can be written as It therefore means that the air entering the compressor would remain in its initial volume with a

Natural Gas Fracking Risks

1900 words - 8 pages Natural gas is said to be one of the most popular forms of energy today. In the past, often left undeveloped and wasted, it was once considered “unusable” and “worthless”, compared to oil. In order to try to break our country’s dependence on foreign oil supplies, we have begun to dip into our own natural gas supply. Natural gas is found underground, and is produced when trapped gas is released above ground. Hydraulic fracturing

Fracking the World

1038 words - 5 pages overseas oil. Natural gas burns cleaner then that of crude oil. It warms houses, lights up your barbeque, and fuels buses in major cities. The list goes on, there is even ways to turn natural gas into fuel for your vehicle. As wonderful as that might sound the questions are, at what cost to our health and continued wellbeing? Why are gas companies given special accommodations not to have to follow through with laws that have already been passed and

Hot Air Balloons - How they work, how they comply with laws of thermodynamics, and how to create a home-made balloon

550 words - 2 pages Hot air balloons might seem magical to some people because of its ability to float in the sky, but the process that allows them to take flight is actually very uncomplicated. The balloons are prime examples of the implementation of gas laws. The physics are based on the simple principle that warm air rises in cooler air. Hot air has less mass per unit of volume.The relevant gas law in use is Charless Law, which is V1/T1=V2/T2. The law

Regulating Gas

993 words - 4 pages Regulating Gas As we all know our transportation system is terrible. On average, a U.S. citizen spends more to commute then any other country in the world. A15 to 20-mile commute in lot of cities in the U.S can take up to an hour. Something needs to be done! Adding more lanes on existing freeways is not working, and building more freeways will just prolong the inevitable "" more roads more traffic, need more roads. Something should be done to

Government Intervention in Gas Prices: Good or Bad? (REPORT)

1712 words - 7 pages the economy will be stabilized; everybody wins. The opposing side argues that government intervention in this sector of the market has never been successful in the past, and that any form of tampering with the laws of supply and demand will result in sheer market chaos, far from the intended result. Both sides will be examined in greater depth throughout the body of this report, wrapped up with a conclusion of the best course of action, based on

The Rise And Fall Of Enron

956 words - 4 pages Natural Gas in 1985 with another natural gas pipeline to create Enron. The intent from the beginning was to expand beyond just selling and transporting gas. The company was moving toward the newly deregulated markets. The deregulated markets were not governmental control. The company moved toward every deregulated energy market they could find. For example, the same way that the farmers market works is the same way that Enron bought and sold

Fast Cars and a Clean Environment

3830 words - 15 pages has to be added inside the chamber to help create a powerful combustion, which is why rotary engines consume more gasoline. In addition, since rotary engines tend to consume more gas, they also tend to create more exhaust fumes which is why it’s hard for these types of engines to pass smog checks or meet emissions laws. Electric Powered Cars Another type of technique used to power cars is the idea of using an electric motor. Unlike a

Similar Essays

Gas Gangrene Essay

966 words - 4 pages species and an x-ray, CT scan, or MRI of the area may show gas in the tissue. RECENT RESEARCH FINDINGS The main new research that doctors are doing with gas gangrene is mainly with hyperbaric treatment of the disease. The basis of the research is to hyperoxygenate the tissues causing the bacteria to halt production. The hyperbaric chamber uses two different laws: Boyle's and Henry's Law. Boyle's Law is as pressure raises, the volume of a gas

Untitled Essay

1355 words - 5 pages Natural Gas, Pollution, and Our Environment In today's society there is a great need for environmental protection. Things that happened during our parents and grandparents age have caused a great concern for our ozone, our air, and our environment. You constantly hear about the many sources of pollution, but we hardly ever hear about the solutions. In this paper I will present one possible solution to the air pollution problem that has been

Design Gas Pipeline Essay

2220 words - 9 pages codes and standards as well as the laws, rules and assize eligible of local authority. Pipeline System is a network of Pipes or a set of pipelines by using fittings, valves and other particular components to achieve the required method of transferring fluids (oil or gas) from one position to another position. It is the effective method for transferring fluids without a significant or no losses the quality and properties of fluid. The plumbing

Energy Resource Paper

2553 words - 11 pages truly need them. One resource we have we use a lot of is natural gas, which we use for many different things as an energy source. It is a vital component of the World’s supply of energy. It is primarily composed of a combustible mixture of hydrocarbon gases. When burned it gives off a lot of energy and few emissions. Also it is a clean burning gas that doesn’t emit a lot of potentially harmful byproducts in the air. Because of this clean