following substance freezes at 39oC? a) Copper b) Mercury c) Steel d) Bromine 5. Which of the following substance boils at 357oC? a) Bromine b) Steel c) Copper d) Mercury 6. Which of the following substance has all the properties that should be present in thermometric materials? a) Mercury b) Bromine c) Steel d) Copper 7. Which thermometers are widely used in laboratories? a) Mercury-in-glass thermometers b) Bromine-in-glass thermometers c) Steel-in-glass thermometers d) Copper-in-glass
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molecules doesn’t want to be dianion 5. (11 pts) Carey. All the parts of this problem refer to the alkane having the carbon skeleton shown. (a) (2 pts) What is the molecular formula of this alkane? C13H38 (b) (2 pts) What is the IUPAC name? 5-ethyl-2‚6-dimethylnonane 1 pt for or 1 pt for 5-ethyl-4‚8-dimethylnonane 2‚6-dimethyl‚5-ethylnonane (1 pt) How many methyl groups are present in this alkane?____5 (1 pt) How many methylene groups?______5______ (1 pt) How many methine groups?_________3___
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Objectives After studying this Unit‚ you will be able to • name haloalkanes and haloarenes according to the IUPAC system of nomenclature from their given structures; • describe the reactions involved in the preparation of haloalkanes and haloarenes and understand various reactions that they undergo; • correlate the structures of haloalkanes and haloarenes with various types of reactions; • use stereochemistry as a tool for understanding the reaction mechanism; • appreciate the applications of organo-metallic
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on their special properties. They provide better texture‚ coating ability and appearance‚ for example in salad dressings and ice creams. Vegetable oils that are unsaturated contain double carbon carbon bonds. These can be detected by reacting with bromine or iodine. Vegetable oils that are unsaturated can be hardened by reacting them with hydrogen in the presence of a nickel catalyst at about 60 °C. The hydrogenated oils have higher melting points so they are solids at room temperature‚ making them
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Upon addition of bromine‚ the brown color of bromine quickly disappears as the bromine adds to the double bond in the products. Addition of bromine to the fractional distillate caused the bromine to discolor. The addition of bromine to 2-methyl-cyclohexanol remains brown because there is an absence of double bound (saturation). Addition of potassium permanganate caused the
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result of the two reactions is the depletion of ozone and atomic oxygen.6 Chlorofluorocarbons (CFCs)‚ halons‚ and methyl bromide are a few of the ozone depletion substances (ODS) that break down ozone under intense ultraviolet light. The bromine and fluorine in these chemicals act as catalysts‚ reforming ozone (O3)
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at every point where two lines meet. FUNCTIONAL GROUPS Alkanes and Cycloalkanes - An alkane is an acyclic saturated hydrocarbon that contains one or more carbon=carbon double bonds -Functional group: C-C group -General formula: CnH2n+2; n = number of carbon atoms -Structures of branched-chain alkanes are designated using line-angle structural formulas. (Ex. The five constitutional isomers of C6H14) -Cycloalkanes are alkanes that contain a ring of three or more carbons -General Formula
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Title of Experiment: An Activity Series Lab MSDS: Copper‚ Cu(s) Stability- Stable. Incompatible with strong acids‚ active halogen compounds‚ chlorine‚ fluorine‚ iodine‚ bromine‚ ammonia. May react explosively with strong oxidizing agents. Toxicology-Dust may cause respiratory irritation. Personal Protection- Suitable ventilation if handling powder. Zinc‚ Zn(s) Stability-Stable. Incompatible with amines‚ cadmium‚ sulfur‚ chlorinated solvents‚ strong acids‚ strong bases. Air and moisture
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percent yield of cyclohexene. Lastly‚ a bromine test was carried out to quantitatively test the presence of cyclohexene product in the prepared sample. A total of 2-3 drops of 3% bromine in dichloromethane was added to a new test tube as well one drop of the prepared cyclohexene. Upon observing a color change from brown to clear‚ one can confirm the presence of cyclohexene in the obtained
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the bromonium ion forming the erythro enantiomer. 7) (a)If the cinnamic acid were a mix of cis and trans than we would have gotten a mixture of erythro and threo product in the end. (b) If only 5mL of the bromine solution is added then the reaction would not be able to run to completion and bromine would be the limiting reagent causing less final product. (c) If cyclohexane was used then it would not react with the bromide nearly as much as the cyclohexene and there would be a larger amount of bromide
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