process a tri-generation process. The refrigerant that is used in the system is water‚ lithium bromide is the absorbent‚ which are used in the water-lithium bromide vapour absorption refrigeration system. A solution of water and lithium bromide is pumped to the generator and is heated where the water refrigerant gets into a vapour state and moves to the condenser where it’s heated. At the same time lithium bromide goes back to the absorber where it absorbs water from the evaporator. This
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source is needed to reverse the flow‚ and only one container is needed. 2. What is the measured value of Ecell for each cell and its relevance to the EOred for the iron half-cell and halogen half-cells? The measured value of Ecell for the zinc‚ iron‚ bromine‚ and iodine half-cells were -0.71‚ 0.61‚ 0.40‚ and 0.51 respectively. The standard cell potential is the difference between the standard electrode potential of the cathode (reduction) half-cell and the standard electrode potential of the anode (oxidation)
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of mild to moderate • Short acting B2 agonist • Ipratropium bromide • Controlled O2 to maintain SPO2 95% • Oral corticosteroids • Measure lung function after 1 hour- PEFR 60-80%‚ symptoms improved. • consider discharge GINA- Severe • Drowsiness‚ confusion‚ silent chest • Talk in words • Sits hunched forward • Agitated • RR>30 • PR>120 • O2 <90% • PEFR<50% Treatment of severe Asthma (GINA) • Short acting B2 agonist • Ipratropium Bromide • O2 • IV Corticosteroids • IV magnesium • Consult ICU • Prepare
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Symbol Name hydrogen ion H¯ hydride lithium ion F¯ fluoride Note that the sodium ion Cl¯ chloride letters in an ion’s potassium ion Br¯ bromide name before the rubidium ion I¯ iodide -ide ending is 2¯ cesium ion O oxide the stem. For 2¯ beryllium ion S sulfide example‚ the stem magnesium ion Se2¯ selenide for bromide is calcium ion Te2¯ telluride brom-. strontium ion barium ion Ag + silver ion N 3¯ nitride radium ion Ni2+ nickel ion P 3¯ phosphide 3+
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in vehicles that reduced pollutants in car exhaust and because of the potential for causing brain damage in children. Great Lakes interest in Octel was a chemical called bromine that was used to make the lead additives. This chemical was used by Great Lakes to produce several other products and in efforts to obtain the bromine‚ Great Lakes decided to risk taking on the ethical
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Cited: Castillo‚ Cassandra A. "The Phaseout of Methyl Bromide | Ozone Layer Protection - Regulatory Programs | US EPA." EPA. Environmental Protection Agency‚ 25 Jan. 12. Web. 05 Mar. 2013. This is a government funded website and the articles author was not included in the article. I then contacted the EPA to
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Edexcel A2 Chemistry Questions and Answers Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Unit 4 Rates‚ equilibria and further organic chemistry Multiple-choice questions ..............................................................................7 Structured questions . . . . . . . . . . . .
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Introduction.- Majority of the time‚ to prepare alkyl halides is via the nucleophilic substitution reactions of alcohols. SN2 reaction is the type of reaction used in this lab experiment. Our objective was to see how a primary alkyl halide reacted with an alcohol. We did a conversion of n-butanol to 1-bromobutane. Br- ions is the nucleophile for this reaction which is generated from an aqueous solution of NaBr. The catalyst that converted the OH functional group of butanol to a better leaving group
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regular phenylmagnesium bromide preparation
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materials reached the stratosphere the were acted on by ultraviolet radiation and broke down releasing chlorine and bromine into the ozone layer. The ozone layer is the earth’s ultraviolet shield. The chemistry is such that the chlorine and bromine attack the ozone‚ reducing it to ordinary oxygen which as no shielding effect from UV-B. The complex chemical reactions allow the chlorine and bromine to interact again and again with ozone molecules‚ until they eventually leave the ozone layer bonded to some
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