Research Question People may think of fruit as a sweet‚ healthy option for a snack. What those people do not know is that some of those fruits can be very damaging to their teeth and to their bodies. One reason for this is that a variety of commonly digested fruits are extremely acidic. This experiment will test the pH level of everyday fruits to see how acidic they actually are. When eaten‚ which fruit will have the lowest pH (be the most acidic)? Hypothesis A sign that a fruit is acidic is
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Depending on the pH of the fruit or plant the pigment will give a different color. This pigment can be used to indicate pH. pH is the -log[H+]. Acids increase the concentration of hydrogen ions ([H+]) in a solution and therefore have a low pH. A base will increase the concentration of hydroxide ions ([OH-]) (decreasing the [H+]) in a solution and will have a high pH. Notes: *Another household item from which a pH indicator can be extracted is Ex-Lax. Phenolphthalein is a commonly used indicator
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Conclusion “How can we test and treat the Acme wastewater?” We need to test the pH to see what the waters health is. We also need to see if there is any copper in the water‚ if there is‚ we need go go throught the procedure. If the water is turbid‚ we need to figure out a way to make it clear and clean. My hypothesis was partially correct and incorrect. It was correct because we did need to test the water to see if it was hazardous‚ and part of it did. We needed to fix that fast. It was partially
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and 6 drops of HCL to create the pH2‚ add 1 ml of that solution to the vile labeled 2. take another beaker and add 20 ml of distilled water and add 3 drops of HCL to create the pH 4.Add 1 ml of that solution to vile 4. to create the pH of 5‚ add no base or acid‚ and add 1 ml of distilled water. To created the pH of 6‚ pour 30 ml of distilled water into a beaker‚ add one drop of NaOH and add 1 ml of that solution to the vile labeled 6. take another beaker with 60 ml of distilled water‚ add 2 drops
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Procedure: The first part of this lab involved the standardization of the base NaOH with potassium hydrogen phthalate‚ or KHP. First‚ about 400 mL of NaOH (10 M) were poured into the 600-mL beaker. This was used to fill the burette. The 50-mL burette was rinsed through twice with 5 mL of NaOH. Then‚ the burette was mounted on the ring stand using a burette clamp and filled to 0 mL. Some of the NaOH was drained to fill the tip of the burette. The initial volume of NaOH‚ rounded to two decimal places
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point analysis. Pre-Lab 1. What is the limiting reagent in step 1? What is the theoretical yield of amide 1 in figure 3? The amine is the limiting reagent. The theoretical yield is 4.81 grams of amide 1. 2. What is the theoretical yield of Lidocaine? Base calculations on 2‚6-dimethylaniline. The theoretical yield of lidocaine is 5.71 grams. 3. How many molar equivalents of diethyl amine are used in step 2 Roughly 3 molar equivalents of diethyl amine are used in step 2. Procedure An ice water bath for
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Analysis: Water Analysis Jasmine Kennedy Bey Lab Partners: Mohammed Alabbad‚ Drew Blackson Chemistry 1290-020 3/26/2014 TA: Rajendr Thakuri Purpose/Abstract: Students are tested for their knowledge of basic titration technique and proper usage of specific-use probes (those used for conductivity‚ alkalinity‚ and pH‚ chloride‚ nitrate and hardness detection) on Logger Pro software. The purpose of this comprehensive lab is to determine the chemical properties
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Lady: Nowadays ‚ “Extreme sports” or “X-Games” such as climbing‚ bungee jumping ‚ and downhill skateboarding are being practiced by Peruvians more often . But I’m wondering the reason why Peruvians now prefer to do this kind of stunts instead of practicing safer sports‚ I mean ‚ sports which don’t involve putting in risk their lives . karol: Well‚ it seems likely they’re looking for non-common activities and want to feel the experience of trying something new which may motivate them to do crazy
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2.6.6. Levels of total ammonia nitrogen‚ nitrite‚ nitrate and phosphate in the water samples The mean TAN levels in the present study in all the sampling stations were below the recommended level of 0.1 to 1.0 mg/L prescribed by Boyd (1990). However‚ when the level recommended (< 0.2 mg/L) by Chavez (2009) is taken as a standard‚ it was found to that 35% of the study period‚ TAN levels were above the acceptable limit in the feeder canal and the pond 3. Ferreira et al. (2011) has recommended 0
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the stirring rod. Record the pH results in your data. 3. Obtain 25 mL of 2 M sodium hydroxide and also test it with pH paper using the same method as stated above. Remember that a pH less than 7 indicates an acid…pH greater than 7 indicates a base…pH equal to 7 indicates a neutral solution. Record your results. 4. Fill your 600 mL beaker one third full of ice water.
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