Introduction Butter is a dairy product made by churning of cream‚ mostly from fresh cow’s milk‚ with the additional of salt (Bylund‚ 1995). Salt (Sodium Chloride) is used as flavoring and preservative as it inhibit the microbial growth. Salt content in butter is limited by legislation in some countries. For example‚ in Thailand‚ the maximum sodium chloride content in butter shall not exceed 4 percent of total butter weight (Thai Ministry of Public Health‚ 2001). Therefore‚ analytical methods are
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Nicolette F. Nuñez August 11‚ 2010 Grade Level: Grade 8- Damselfly Subject: Biology LESSON PLAN Lesson: Chemical Reactions + Catabolism/Anabolism Number of Meetings: 1 Behavioral Objectives: At the end of the lesson‚ students should be able to: a.) Relate chemical reactions with metabolism b.) Identify the major components of a chemical reaction c.) Describe at least one everyday example of an endergonic and exergonic reaction d.) Relate the breakdown and formations
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Anthony Felix 10/27/11 Che12ALR Synthesis of Diphenylacetylene Observation of Results: 1‚2-dibromo-1‚2-diphenylethane | 0.204g | Diphenylacetylene | 0.087g | Theoretical yield | 0.107g | Percent yield | 81.3% | Melting point range of diphenylacetylene | 57- 60°C | Average melting point | 58.5°C | Average literature melting point | 60.0°C | Percent error of melting point | 2.5% | Calculations: Theoretical yield: Limiting reagent (LR) x M.W. (LR) x Mole to Mole ratio x M.W. (product)
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Mario Troncoso 20025019 Dehydrating Cyclohexanol Structure/MSDS: Anhydrous calcium chloride—irritant and hygroscopic (calcium chloride) cyclohexanol—irritant and hygroscopic (cyclohexanol) cyclohexene—flammable and irritant (cyclohexene) Sulfuric acid—toxic and oxidizer (Sulfuric acid) phosphoric acid—corrosive (phosphoric acid) Results/Data: End product weighed 0.109g of cyclohexane and tested positive with bromine test Discussion: In order to perform
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Chemical Equations Name _____________________________ Balancing Balancing Equations Challenge Part A: Parts & Pieces (1) Circle each subscript in each chemical formula. (2) Draw a square around each coefficient. (3) Answer the questions related to each chemical formula. O2 CO2 5 H2 What element does the O represent? ___________________ How many atoms of each element are in the formula shown? C = ______ O = ______ How many atoms of Hydrogen are in this formula as shown
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Asvfdbdfklsdbnvipsdbnipvbnvklsbnaklvnsdklavnklscnvm‚ cxzklv xkclbzviksdbaivbiasdfvbklfbsdklvbkdfvm bxcm‚bvjbsjav mxd vcxmbvbawjbviwoabvm ksdbnvksbdklvbsdabvjxcbmv bcmzx‚cvoweFJWEOVJL;svl:ZXN‚.VN.CXZNBIORAWEN9HSdkVN‚ZXC VM XCVBIWEBAVKB KLDB VOZB KXCNVKX VKXCHNVK IX MXCI NVSDM VISD VSDIVN SKDNVISDNKVN/ASDNV ASDIVNAWEK FVSDNI VSDVKLSDNVKXCZNVNWENVSDA VSDAVSADOVJWEV SD SDV SDVSD VSDV SDVSD The quality of U.S. and Canadian tap water is generally quite good‚ but chlorine is often added as a disinfectant
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Experiment E: Post lab Natasha Buckiewicz (130361780) IA: Matt Halloran Due: November 26‚ 2014 1. This experiment followed GCP number 8 which is reduce derivatives. This experiment did not use unnecessary derivation since the reaction was not modified in any way. No additional reagents were required so it did not generate a lot of waste. 2. Safer solvents and auxilaries (GCP #5) was not used in this experiment since the experiment used a solvent to complete the reaction. The reaction used both
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A river boat can travel at 20km per hour in still water. The boat travels 30km upstream against the current then turns around and travels the same distance back with the current. IF the total trip took 7.5 hours‚ what is the speed of the current? Solve this question algebraically. Let x = speed of current Upstream speed=20+x Downstream speed=20-x =) 30/20-x + 30/20+x = 7/5 =) (20-x)(20+x) = 400-x^2 =) 30(20-x)+30(20+x)=7.5(400-x^2) =) 600-30x+600+30x=3000-7.5x^2 =) 7.5x^2 = 3000-1200
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Chemical Reaction is a process that involves rearrangement of the molecular or ionic structure of a substance‚ as opposed to a change in physical form or a nuclear reaction. Reactant is a substance participating in a chemical reaction‚ especially a directly reacting substance present at the initiation of the reaction. A word equation is an equation where only the words of the products and reactants are given. It is used to describe chemical reactions using words. A skeletal equation is a chemical
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Tonsilloliths or tonsil stones are small groups of calcerous substances at the back of the mouth. These stones are specifically found on the tonsillar crypts of the tonsils. They are white small bumps in the throat; sometimes white-yellowish in color. The tonsil stones appear harmless‚ except that they can in your social life because they can really make your breath smell bad. Thus‚ you would want to remove tonsil stones using effective treatments. In treating tonsil stones‚ you actually have many
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