| 100mL beaker + 20mL water + sodium carbonate solution | 64.2 grams | Watch glass | 32.2 grams | Precipitate + filter paper + coffee filter | 2.20 grams | Precipitate + 150mL + coffee filter | 84.1 grams | Uncertainty of electronic balance: ±0.001 grams Uncertainty of 100 mL beaker: ±0.05 mL Uncertainty of 150 mL beaker: ± 0.05 mL Qualitative Data Before reaction: * Lead nitrate solution: translucent‚ dissolved‚ looks like water * Sodium carbonate solution: translucent
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this experiment is to separate sodium chloride/charcoal and sodium chloride/copper(II) chloride mixtures. Equipment requiredBalanceFilter funnel standFilter funnelBunsen‚ tripod and gauze matWatch glassGlass rodBeakers (two 100mL)Graduated cylinder (25 mL)Filter paper (Whatman No. 1—three 12.5 cm sheets)Sodium chloride/charcoal mixture (4 g)Sodium chloride/copper(II) chloride mixture (8 g)Ethanol (25 mL)Distilled waterBoiling chipProcedureA Separation of a Sodium Chloride and Charcoal Mixture#1
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reactants and products of the reaction‚ to determine the actual yield vs theoretical yield‚ and to accurately calculate percent yield. The mass of the weighing dish was .6 grams and the mass of the weighing dish plus the sodium carbonate was .72 grams thus the mass of the sodium carbonate alone was .12 grams. After the precipitation reaction the mass of the filter paper and calcium carbonate was 1.8 grams and the calcium carbonate was .8 grams. Through this experiment we used a precipitation reaction
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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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