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Stellar black holes form when the center of a very massive star collapses in upon itself. This collapse also causes a supernova, or an exploding star, that blasts part of the star into space. Scientists think supermassive black holes formed at the same time as the galaxy they are in.

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Manganese(IV) oxide is the inorganic compound with the formula MnO2.

It is for dry-cell batteries, such as the alkaline battery and the zinc-carbon battery. It is used as a reagent in organic synthesis, for example, for the oxidation of allylic alcohols.It is known as a catalyst.

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The Aurora is an incredible light show caused by collisions between electrically charged particles released from the sun that enter the earth's atmosphere and collide with gases such as oxygen and nitrogen. The lights are seen around the magnetic poles of the northern and southern hemispheres.

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The Space Shuttle Columbia disaster occurred on February 1, 2003, when Columbia disintegrated over Texas and Louisiana as it re-entered Earth's atmosphere, killing all seven crew members.

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NASA Gives Graphic Details of Columbia Deaths

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RARE! Space shuttle Columbia Explosion footage

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On February 1st, 2003, the space shuttle Columbia disintegrated during its re-entry into the atmosphere. The seven astronauts were killed. 82 seconds after the launch of shuttle (STS-107), a sizable piece of foam struck the leading edge of Columbia's left wing, at a speed between 650 and 950 km/h, making a hole in the protective tiles made of reinforced carbon-carbon (RCC), close to the landing gear area.

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How big is the observable universe?-From i have always wondered.

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How big is the observable universe?-From i have always wondered.

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The observable universe consists of at least two trillion galaxies and It is estimated that the diameter of the observable universe is about 28.5 gigaparsecs (93 billion light-years.

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1225 km/h

In dry air at 20 degrees Celsius, the speed of sound is 340.3 m/s (1225 km/h, 761.2 mph, 661.5 knots, or 1116 ft/s). The speed represented by Mach 1 is not a constant; for example, it is mostly dependent on temperature.It is the speed of sound.

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Please Subscribe! http://testu.be/1HV4rBv Check out more TestTube 101: http://testu.be/1fu2C5s The rocket-powered X-15 flies at an astounding 4,520 miles per hour. That's MACH 6.04 or 6 times over the speed of sound! Crazy!

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how to put the results of the Experiment: "To test how to measure the release of oxygen in a chemical equation."

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how to put the results of the Experiment: "To test how to measure the release of oxygen in a chemical equation."

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Get all measurements and rate of which the oxygen is gathered into the gas jar.Record data from all 5 tests and record it into table and graph.

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To test how to measure the release of oxygen in a chemical equation.

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To test how to measure the release of oxygen in a chemical equation.

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Firstly set up apparatus as in video,then add Hydrogen peroxide into the conical flask.Then insert the rubber tubing into the Graduated cylinder.After setting up the experiment, 1 person puts Manganese Dioxide into the Conical flask while the other person records the rate ant which the water is decreasing. Repeat the experiment five times again. Record data and observations in table.

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Chemical Properties of Hydrogen Peroxide

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Everyday Uses & Benefits of Hydrogen Peroxide

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Preparation Of Oxygen Using Hydrogen Peroxide

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Follow us at: https://plus.google.com/+tutorvista/ Check us out at http://www.tutorvista.com/content/chemistry/chemistry-iii/hydrogen/hydrogen-peroxide-properties.php Chemical Properties of Hydrogen Peroxide Place the hydrogen peroxide solution in the flask. Ad a small amount of manganese dioxide or other suitable catalyst to speed up the decomposition of the hydrogen peroxide. Note that the solution is bubbling.

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How to Titrate Different liquids/elements?

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How to Titrate Different liquids/elements?

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Subtract the initial volume to determine the amount of titrant delivered. Use this, the concentration of the titrant, and the titration reaction to calculate the number of moles of reactant in your analyte solution.

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A covalent bond is the type of bond usually formed between two or more nonmetal atoms. These atoms share their outer electrons to essentially fill all their outer orbitals and become more stable. ... When a metal atom bonds with a nonmetal atom, they usually form an ionic bond.