up compounds that need to be tested‚ taking those compounds with it. Through adsorption‚ the mobile phase separates into different components (soinc). The mobile phase can be liquid‚ gas‚ or supercritical fluid. How Does Chromatography Work? Chromatography is a surface effect. It works by first starting off with an unidentified liquid being injected into a column. As the chemicals in the liquid move down the column‚ they separate depending on their physical and chemical attributes‚ such as speed
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How the Predator UAV Works Military commanders use tactics and strategy in combat to inflict as much damage on the enemy while trying to risk as few personnel and resources as possible. This principle was at the heart of the development of the RQ-1 and MQ-1Predator Unmanned Aerial Vehicle. These high-tech aircraft‚ controlled by a crew miles away from the dangers of combat‚ are capable of reconnaissance‚ combat and support roles in the hairiest of battles. In a worst-case scenario‚ if a Predator
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How Do Helicopters Fly? How do helicopters work? Helicopters are the most versatile flying machines in existence today. This versatility gives the pilot complete access to three-dimensional space in a way that no airplane can. If you have ever flown in a helicopter you know that its abilities are exhilarating! The amazing flexibility of helicopters means that they can fly almost anywhere. However‚ it also means that flying the machines is complicated. The pilot has to think in three dimensions
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Write an essay that explains how the Electoral College works. How does the Electoral College shape the strategy of candidates? Why is it harder to win presidential elections post 1968? Every four years‚ on the Tuesday following the first Monday of November‚ millions of U.S. citizens go to local voting booths to elect‚ among other officials‚ the next president and vice president of their country. Their votes will be recorded and counted‚ and winners will be declared. But the results of the popular
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algebra system with a friendly user interface. It works in parallel with your teaching to help students stay engaged in math and science. Algebra and geometry students benefit from fast‚ clear equation-solving‚ while more Top 3 advanced reasons students get to use it help in subjects such as calculus‚ trigonometry‚ physics‚ and chemistry. 1) Free and easy. Microsoft Mathematics is a free download that’s easy to install. It works with PCs and Windows® operating systems. The approachable
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How Nuclear Power Works The nuclear power plant stands on the border between humanity’s greatest hopes and its deepest fears for the future. On one hand‚ atomic energy offers a clean energy alternative that frees us from the shackles of fossil fuel dependence. On the other‚ it summons images of disaster: quake-ruptured Japanese power plants belching radioactive steam‚ the dead zone surrounding Chernobyl’s concrete sarcophagus. But what happens inside a nuclear power plant to bring such marvel
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How Your Heart Works [pic] Your heart is a pump. It keeps blood moving around your body. The blood delivers oxygen and nutrients to all parts of your body‚ and carries away unwanted carbon dioxide and other waste products. The heart has four chambers - two on the left side and two on the right. The two upper chambers are called the atria‚ and the two lower chambers are called the ventricles. The two sides of the heart are divided by a muscular wall called the septum. Each side of the heart
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How British Schools work All British children must stay at school from the age of 5 until they are 16 Many of them stay longer and take final examinations when they are 17 or 18. Before 1965 all children of state schools had to go through special intelligence tests. There were different types of state secondary schools and at the age of 11 children went to different schools in accordance with the results of the tests. Slate schools are divided into the following types: Grammar schools. Children
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Introduction to How Gas Prices Work Image Gallery: Hybrid Cars Photo by Justin Sullivan/Getty Images High gas prices can make you stop and think about your commute. See hybrid car pictures to see models that save you money.In May 2008‚ average gas prices in the United States approached‚ and in some places passed‚ $4.00 a gallon‚ shattering records. But this was nothing new to American consumers. May was a month of records that broke one after another‚ and that came on the heels of months of
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How to Motivate People in Boring Jobs People working in mundane jobs can easily become bored and less productive the longer they remain in their positions. Motivating these workers requires a commitment to creating opportunities for advancement and an atmosphere that allows workers to feel valued for their contributions -- no matter their roles. Instructions 1. Encourage your employees every day. Set daily‚ attainable goals and acknowledge them with praise‚ and rewards‚ when they reach
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