... be shaken until the color becomes pale. When the color is pale three drops of starch solution should be added until this solution clears. The amount of thiosulphate should be recorded. Using these solutions 1 milliliter of .01 M thiosulphate solution is equal to .056 milliliters of oxygen. The final step would be to calculate the concentration of oxygen per liter of water using the following formula: oxygen=(.056y1000)/50 y is the amount of thiosulphate used. The much easier and ... far less complicated way to find the ... ...

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... white, when I move it in the last light of the setting sun; it changes its color into a rainbow of pastels. I hold the seashell to my ear and hear the soft echo of the waves, like the sea itself was contained within its small chambers. I put it in my bag, along with all the other things I have taken away from "my beach." I continue my walk along the water. It is getting dark now and ... the sky turns to a soft gray. The colorful ... horizon is an artist's dream. The ... ...

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... white, when I move it in the last light of the setting sun; it changes its color into a rainbow of pastels. I hold the seashell to my ear and hear the soft echo of the waves, like the sea itself was contained within its small chambers. I put it in my bag, along with all the other things I have taken away from "my beach." I continue my walk along the water. It is getting dark now and ... the sky turns to a soft gray. The colorful ... horizon is an artist's dream. The ... ...

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... colors that splash across our majestic hills and valleys each fall. Those streaks of color appear because we have so many trees. In fact, in virtually every setting, from the swamps along the oxbows of the Housatonic River to the summits of the Taconic mountains, the dominant vegetation of our landscape is trees. But why are trees here? Why did trees grow in New England and New York, while grasses coat ... into sugars, through the process of photosynthesis, they use up water. Additional water transpires through the pores in their leaves. To compensate for that loss of water, the plant c...

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... placed in ice to cool. The precipitate is filtered and washed with 4 10mL portions of cold air-free water, then alcohol and ether, careful to not expose the crystals to air when wet with water or alcohol. The crystals are dried then IR absorption is taken. Results The crystals of chromium(II) acetate were brick red in color and had a mass of 1.250g. The crystals were very fine in ... texture, and easily were displaced by wind. The IR absorption spectrum is attached. Discussion Yield If the limiting factor of reactants was the 3.0g Chromium ... chloride (266.36 amu), the ideal yield woul...

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... then waited 3 minutes to see if there were any leaks. After seeing that the there were no leaks we used a marker to mark the line of our beginning starting place. We repeated the same process for the other tube, which contained only water. Once both tubes showed no leaks we placed a fishbowl full of water between our tubes and a lamp. We used a yardstick with centimeter measurements to ... place our tubes 75cm from the lamp. We turned the lamp on and waited six minutes to allow ... equilibrium for both tubes. We used the marker to mark the point of each equilibrium. After three-minute ...

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... a microphone or electric larynx to one's throat and sounding like a computer or robot for the rest of their life. When one has this type of cancer his life is taken away. He can not swim, and he or she can barely take a shower. If any water gets into the hole where the larynx was removed he or she may drown. One other cancer caused by smoking ... is cancer of the mouth. This is called oral cancer. Some symptoms of this are small, pale lumps or a thickening of the mouth. After having this, many patients must have part of their lips or tongues cut out. This means ... no more great tastes...

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... ground level, these molecules seem very harmless, but the truth is that as we release the CFCs, each "harmless" molecule has the capability of destroying up to 10,000 ozone molecules. Many people do not understand the serious effects of the UV-B radiation, which is basically high energy light rays that can penetrate deeply into water, leaves, and skin. Over the countless years on earth, humans and other living ... immune system. A person's exposure to UV-B also depends on location (latitude and altitude), the duration and timing of outdoor activities (time of day, season of the year), a...

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... It is extremely soluble in supercritical fluid carbon dioxide and somewhat soluble in water; aqueous solutions of caffeine quickly break down. Physical features: in solid form it is white in color and is prism-like crystals. It has no odor - it is odorless. Summary Of Article "Effect of Caffeine on Oxygen Consumption and Metabolic Rate in Very Low Birth Weight ... the caffeine, and the decrease of apneic episodes was significant. Review Of Article "Effect of Caffeine on Oxygen Consumption and Metabolic Rate in Very Low Birth Weight Infants with Idiopathic Apnea" In review of this article...

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... from bacteria, dirt and grease. There are many type of soap like bar soap (a solid soap which dissolve in water) and liquid soap (don't need to dissolve in water). How are detergents different from soap? There are many different things from soap and detergent mostly the material that they are made from. The major ingredients of soap making are animal fat like goat fat or vegetable ... is combining with a chemical call alkalis by heat for several hours. Then salt is added to separate the mixture into two layers which the top mixture is call neat soap. The soap can also add other mixture ...

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... barium sulfate to examine a patient's intestines with a X-rays. When a patient drinks a suspension of barium sulfate in water or barium enema, the barium sulfate particles temporarily fill the digestive track. When the X-ray is taken, the intestines and other organs appear white. The X-ray picture shows clearly the shape of the intestines and other organs outlined against a black background. In the industrial applications, Barium is used mostly for glass and rubber making ... stronger and as a rat poison. Chrome yellow ( barium chromate) is used as paint pigment in safety matches. Bariu...

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... an ice bath. Every five minutes, the test tubes were unwrapped and observations of the color inside the test tubes were recorded. This was done in five minute increments for twenty minutes. If there was to be a quicker rate in photosynthesis in any of the test tubes, then the water in that test tube would be a reddish color. Hypothesis 2: Light directly affects the rate of photosynthesis. To set up this experiment, three ... syringes, nine leaf blades, water, aluminum foil and phosphate ... ...

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... left a white substance. It was powdery at first, and then hardened. I figured that salt must have been the substance dissolved in the "sludge." Conclusion: After doing the tests, I came to the conclusion that the "sludge" consisted of water, isopropanol, sulfur, sand, and salt. Soluble in Water Soluble in Isopropanol Color Odor Boiling Point Sugar yes no white none none Salt yes no white none none Sulfur no no yellow ... none none Isopropanol none none none alcohol 80 C Water none none none none 100 C Sand no no brown none ... ...

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... But what are alkanes? Alkanes are the simplest homologous series. They form a series of compounds with the general formula CnH2n+2. They have single carbon-carbon bonds, as mentioned earlier. They are extensively used in making crude oil and are considered good fuels because they burn completely to give carbon dioxide and water. It can also be a source of carbon monoxide in cases when it undergoes ... incomplete combustion. Another thing is that it can undergo thermal composition to give an alkene and a smaller alkane. Alkanes are known to have low boiling point compared to the other hyd...

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... water. Next is 4) Aluminum hydroxide Al(OH)3. This compound is white or colorless with shades of gray, blue, and green. This is also in the form of a crystal. The next compound is 5) Aluminum nitrate AlNO3, the appearance of this compound is a white crystal and is a solid in its physical state. Next is 6) Aluminum oxide Al2O3; it is a solid in its physical state and highly variable. The color ... can be white or colorless, blue, red, yellow, green, brown, purple, and pink; there are also instance of color differences. Next ... is 7) Aluminum Phosphates AlH3O4P. This compound is also a ...

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... water. Next is 4) Aluminum hydroxide Al(OH)3. This compound is white or colorless with shades of gray, blue, and green. This is also in the form of a crystal. The next compound is 5) Aluminum nitrate AlNO3, the appearance of this compound is a white crystal and is a solid in its physical state. Next is 6) Aluminum oxide Al2O3; it is a solid in its physical state and highly variable. The color ... can be white or colorless, blue, red, yellow, green, brown, purple, and pink; there are also instance of color differences. Next ... is 7) Aluminum Phosphates AlH3O4P. This compound is also a ...

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... would be classified under Metalloids. Its standard state is a solid. When this element is pure it is a blue-gray color. Silicon is the second most abundant element on Earth. It makes up about 25% of the Earth's crust by weight. Silicon can be found in the sun and stars. Silicon forms very stable compounds. Silicon is not found free in nature, but occurs chiefly as ... , a material with excellent mechanical, optical, thermal, and electrical properties. Silicates make up some of the hardest; most beautiful sought after minerals such as aquamarine and emerald. Silicone is another material m...

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... gases chemical change. The chemical change of substance and other compounds is used when your making the delightful treat of pudding. Chemical reactions are found in other ways but these are the most common occurrences. Chemical change results in the production of new substances. Two types of substances which are very important in everyday life are acids and bases. Acids are sour, water-soluble substances which ... they change so fast that they can react with skin and cause burns. Bases are bitter, water-soluble substances which are also very useful. Examples of bases are ammonia, baking...

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... ? Sulphur dioxide (SO2) is generally a byproduct of industrial processes and burning of fossil fuels. Ore smelting, coal-fired power generators, and natural gas processing are the main contributors. SEVERE YELLOWING IN COLOR CAUSED BY ACID RAIN (SHOULD BE HEALTY GREEN) THE TREE ON THE RIGHT IS SHOWING NORMAL GROWTH THE TREE ON THE LEFT IS SHOWING THE EFFECTS OF ACID RAIN ACID RAIN - A DEFINITION Acidity is ... worthwhile to note that the pH scale is logarithmic; that is, a substance of pH of 6 is 10 times more acidic than another with a pH of 7. Generally, the pH of 5.6 has been used as t...

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... ? Sulphur dioxide (SO2) is generally a byproduct of industrial processes and burning of fossil fuels. Ore smelting, coal-fired power generators, and natural gas processing are the main contributors. SEVERE YELLOWING IN COLOR CAUSED BY ACID RAIN (SHOULD BE HEALTY GREEN) THE TREE ON THE RIGHT IS SHOWING NORMAL GROWTH THE TREE ON THE LEFT IS SHOWING THE EFFECTS OF ACID RAIN ACID RAIN - A DEFINITION Acidity is ... worthwhile to note that the pH scale is logarithmic; that is, a substance of pH of 6 is 10 times more acidic than another with a pH of 7. Generally, the pH of 5.6 has been used as t...

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... Mars is nicknamed the god of war. The Planet probably got its name from its red color, Mars is sometimes called the red planet. Mars" orbit is significant because it is elliptical. Mars average temperature is about -55C and at the winter poles it is almost about 27 C. There are four major land forms on Mars. Olympus Mons is the largest mountain in the solar system rising 24 ... km above the surrounding plain ... hours and 37 minutes. The lengths of each day in Mars and Earth are almost the same. Mar's seasons are also similar to the Earth's. Unlike the Earth Mars has two moons rather t...

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... is diamond. Diamond is the hardest substance known on earth. Although diamonds found in nature are colorless and transparent, wen combined with other elements it's color can range from pastels to black. Diamond is a poor conductor of eat and electricity. Until 1955 the only sources of diamond were found in deposits of volcanic origin. Since the scientists have found ways to ... make diamond from graphite and other synthetic materials. Diamonds of true gem quality are not made in this way ... the glucose immediately, releasing six molecules of carbon dioxide and six of water for each mol...

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... . Highly alkaline or acid soils can harm many plants. Neutral soils can support most of the processes. When acid rain falls from the sky it gets into the soil. The plants only have time to absorb and store the water when the soil is wet. Then the leftover water in the soil evaporates back into the sky where it becomes water vapor, forms into clouds, and gets ready to rain again. It is ... matter. Entisols show little development. Histosols are organic soils. They form water saturated environment, including swamps and bogs. Inceptisols are only slightly developed. Mollisols develop in pra...

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... , we are already thinking of ways to reduce the effects it is causing; hoping that the processes will end. The Earth's atmosphere is divided into several layers. The lowest region, the troposphere, the next layer, the stratosphere, and the most atmospheric ozone are concentrated in a layer in the stratosphere, about 15-30 kilometers above the Earth's surface. Ozone is a molecule containing three oxygen atoms. It is blue in color and has a strong ... greenhouse gases. . It is caused by increased amounts of carbon dioxide (CO2). The effect of CO2 is amplified by the atmosphere (especially ...

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... on the conversion over time of hydrogen peroxide (H2O2) into water and oxygen gas using an enzyme catalase. MATERIALS AND METHODS: PART A: In the fist part of the lab, the catalase is mixed with substrate (hydrogen peroxide). The enzyme catalyzes the conversion of H2O2 to H2O and O2. Before all of the catalase is converted, sulfuric acid (H2SO4) stops the reaction. After the reaction is stopped the amount of H2O2 remaining is measured by the use of potassium ... permanganate (KMnO4) added in drops until the solution turns a reddish brown or pink color, the final reading on the titration...

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