Lab 4 – Energy Sources and Alternative Energy Experiment 1: The Effects of Coal Mining |Table 1: pH of Water Samples | |Water Sample |Initial pH |Final pH (24-48 hours) | |Pyrite |6 |4
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reaction between o2 and h2. -2H2 + O2---2H2O 5. What is the function/purpose of the brothymol blue in the CO2 experiment? -The bromothymol blue changed from blue to green and then it turned yellow. After the CO2 was mixed with the water carbonic acid was formed. If there is a lot of CO2 present it will turn
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to USEPA Method 350.1 and Standard Methods 4500–NH3 H. Prior to analysis, ammonia is buffered to pH 9.5 and distilled into a solution of boric acid. Cyanate, which may be encountered in certain industrial effluents, hydrolyzes to some extent, even at the pH of 9.5 at which distillation is carried out. #Distillation - adding excess base to the acid digestion mixture to convert NH4+ to NH3, followed by boiling and condensation of the NH3 gas in a receiving solution. #Titration - to quantify
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soap depend on the quality of oil, and the amounts of the caustic soda and water used to make it. The speed of the reaction between the oil and the caustic soda is influenced by free fatty acid content of the oil, the heat of the components before mixing, and how vigorously the mixing is to be done. Free fatty acid contents, vigorous mixing, and heat, speed up the given soap-making process. The Food, Drugs and Cosmetics (FD&C) Act defines cosmetics by their intended use, as "articles intended to be
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Are you tired of getting crappy nail polish that chips easily, loses its color, or makes your nails look yellow? Well you should try OPI nail polish! OPI is an excellent nail polish because it contains no DBP, toluene, or formaldehyde. It also has beautiful colors, and makes you feel like a Disney character One of the best things about OPI nail polish is that it does not contain DBP, Toluene, or formaldehyde. DBP is found in adhesive and is very harmful to the environment. Why would you want
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| Ph of Household Chemicals | Formal Lab Report | Chemistry 1000 | | Fall 2014 | | Purpose: To determine the pH level of common household products and to determine whether they are an acid or a base using red cabbage as a pH indicator that will change colors according to the acidity levels. Hypothesis: I believe that most of the cleaning chemicals will be acidic and most of the food/edible items will be neutral. I am also predicting that personal hygiene items are also neutral
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CHAPTER I INTRODUCTION I. IMPORTANCE OF THE STUDY This study was conducted to produce an alternative source of vinegar out of banana peel. It is very convenient because the Philippineshave an abundant plantation of banana plant. Our country grows many different varieties of bananas. Rather than throwing the banana peelings in the waste or tossing them in a compost bin, we can use them to make an alternative source of vinegar. The result of this study is significant to the society.
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the chemical balance in water. A high or low pH will adversely affect the availability of certain chemicals or nutrients in the water for use by plants. ALKALINITY: [120-170 mg/L] The alkalinity of a water is a measure of its capacity to neutralize acids. Although many materials may contribute to the alkalinity of water, most of the alkalinity in natural water is caused by the presence of hydroxides, carbonates, and bicarbonates. Carbonates and bicarbonates are common to most waters because carbonate
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Acids and Bases Acids are substances that produce protons, H+. Bases are substances that produce hydroxide ions, OH-. Acids taste sour, react with certain metals to produce hydrogen gas, and cause certain organic dyes to change color. Acids also react with limestone, CaCO3, to produce carbon dioxide and react with bases to from salts and water. Bases taste bitter, feel slippery or soapy, and react with oil and grease. Also, bases cause certain organic dyes to change color and reacts with acids
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Enzymes and pH pH is a measure of H+ concentration. The higher the concentration of H+ the lower the pH values (acids) A hydrogen ion has a (+) charge so will be attracted to negatively charged molecules or parts of molecules. As like charges repel, positive molecules or parts of molecules will repel hydrogen ions. Large numbers of hydrogen bonds and ionic bonds are responsible for holding the tertiary structure of an enzyme protein in place. This ensures that the active site is also held
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