Chapter I THE PROBLEM Introduction Rubber is an elastic hydrocarbon polymer which occurs as a milky emulsion (known as latex) in the sap of a number of plants but can also be produced synthetically. The major commercial source of the latex used to create rubber is the Para rubber tree‚ Hevea brasiliensis (Euphorbiaceae). This is largely because it responds to wounding by producing more latex. Other plants containing latex include figs‚ euphorbias and the common dandelion
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present in commercial vinegar and the weight-to-volume percent of ammonia present in window cleaners. Acid-base titrations can be conducted using the above samples against standardized aqueous NaOH and standardized aqueous HCl solutions respectively. 2. Introduction: Acetic acid‚ commonly known as ethanoic acid CH3COOH‚ is found in commercial vinegar. It is a weak organic acid that gives vinegar its characteristic pungent smell‚ sour taste and slight acidity. Being an acid‚ vinegar is used as a mild
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Observations of Chemical Changes Lab Report Expectations: Data Table 1: What you Expected to happen Well #/ Question Chemicals Reaction A NaHCO3 and HCI - C02 A bubble occurrence B HCI and BTB A deep yellow C NH3 and BTB A purple color D HCI and blue dye A deep blue E Blue dye and NaOCI A greenish color F NaOCI and KI A bright red G KI and Pb(NO3)2
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environment Robin Glenn September 28‚ 2014 Abstract The lab was conducted at the McBride residence. For this experiment vegetable oil‚ vinegar and liquid detergent was use to contaminate the water. Testing of how ground water is affected by different contaminants was the bases of the experiment. The results were interesting in that when vinegar is filtered through dirt it came out fairly clean‚ it also changed the scent. This shows that maybe we can find a way to find a safer choice on
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stamp in you‚ then you can really save a lot. 2. All kinds of vinegar. If you want it sour‚ then you can definitely use your food stamp to purchase all kinds of vinegars that you want. This particular grocery item is also useful in many things aside from adding flavor to the food that you eat. Whether you know this or not‚ vinegars can be used to clean floors‚ windows‚ your bathroom‚ and even use in your pet’s hygiene. In addition‚ a vinegar is also useful for your laundry stains. Or if you have some
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reaching completion. As you can see from the graph‚ there’s a very small range between the equivalence point and the end point. As such reaching the equivalence point is very difficult to achieve. In this experiment we are titrating “no frills” vinegar with a standardized solution of sodium hydroxide. It is essential that all glassware is properly cleaned and sterilize to acquire accurate results as any contamination may result in inaccurate results. The burette is washed with the titrate as to
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an annoyance to web users. For example‚ if web users type in the wrong web address for a legitimate website‚ they would find themselves on a domain taster’s website full of ads or pop-up ads‚ which are pretty annoying. Most of all‚ these domain tasters were constantly registering and canceling domain names making it almost impossible for legitimate companies and individuals to find the domain owner or even invoke trademark infringement cases against them. This was something‚ most of the internet
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‘NCIS: New Orleans’ Season 3‚ Episode 4 Spoilers: Sebastian gets kidnapped; Low ratings fuel cancellation rumors The next episode of ‘NCIS: New Orleans’ Season 3 is set to bring some super dramatic stuff for the viewers as it will see the kidnapping of a team member of the police squad. The bad news is that the show is facing threats of cancelation because of low ratings. CBS has released the official synopsis for episode 4‚ ‘NCIS: New Orleans’ Season 3 and it says that Sebastian will have to be
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Hussam Aldurayhim Dr. Khalique Ahmed Fun Filled Hands On Science 17 January 2013 Demonstrations in Chemistry Class Chemistry is a class that a lot of college student are afraid of‚ and when I think of chemistry‚ complex equations that don’t benefit come to my mind. The reason is that all I got out of chemistry is those unbeneficial equations‚ for me at least. Also‚ I learned that H2O is water. With all those negative statements‚ I still believe that chemistry is a very important subject to understand
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the solutions you studied in Module 1 form two classes or groups of materials that are related to each other and are important in daily life. They have common properties that can easily be identified. What do you think are common properties among vinegar‚ calamansi juice‚ and soft drinks? What are common among liquid sosa (drain cleaners)‚ soaps‚ and detergents? Which among these are called acids? Which are classified as bases? In this module‚ you will investigate the properties of acids and bases
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