agent. d. Cr(s) is the reducing agent and Cr3+(aq) is the oxidizing agent. e. Cr(s) is the reducing agent and Sn4+(aq) is the oxidizing agent. 2. The following reaction occurs spontaneously. 2 H+(aq) + Ca(s) Ca2+(aq) + H2(g) Write the balanced oxidation half-reaction. a. 2 H+(aq) + 2 e– H2(g) b. 2 H+(aq) H2(g) + 2 e– c. H2(g) 2 H+(aq) + 2 e– d. Ca(s) + 2 e– Ca2+(aq) e. Ca(s) Ca2+(aq) + 2 e– 3. Write a balanced half-reaction for the reduction of CrO42–(aq) to Cr(OH)3(s) in a basic solution
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Chemistry Equipment Symbols 1. Test Tube 2. Boiling Tube 3. Beaker 4. Conical Flask 5. Test Tube Holder/ Tongs /Clamp Stand 6. Measuring/Graduating 7. Funnel 8. Pipette Cylinder 9. Spatula 10. Tripod 11. Bunsen Burner 12. Glass Bulb 13. Burette 16. Condenser Pipette Changes of State Filtering Solutions 03-Nov
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microorganisms. The sludge is largely converted to ’biogas’‚ a mixture of CH4 and CO2‚ which is used to generate electricity for the plant. The liquid is treated by bacteria which break down the organic matter remaining in solution. It is then sent to oxidation ponds where heterotrophic bacteria continue the breakdown of the organics and solar UV light destroys the harmful bacteria. The role of the laboratory A wide variety of analytical tests are used to determine the purity of the wastewater at various
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INTRODUCTION From natural gas‚ crude oils‚ and other fossil materials such as coal‚ few intermediates are produced that are not hydrocarbon compounds. The important intermediates discussed here are hydrogen‚ sulfur‚ carbon black‚ and synthesis gas. Synthesis gas consists of a nonhydrocarbon mixture (H2‚CO) obtain- able from more than one source. It is included in this chapter and is fur- ther noted in Chapter 5 in relation to methane as a major feedstock for this mixture. This chapter discusses
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addition to these you will be required to demonstrate math and graphing skills. The 12 topics covered are: The Atom Moles and Stoichiometry Nuclear Chemistry Solutions Bonding Kinetics and Equilibrium Matter Acids‚ Bases and Salts Energy Oxidation-Reduction (Redox) The Periodic Table Organic Chemistry What is the point of this packet? This review packet was assembled from NY State’s Core Curriculum‚ which outlines the material to be tested on the Regents exam. This is by no means a thorough
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for us to demonstrate our creativity in order to give a good impression on our next job interview. For years‚ Microsoft‚ Google‚ Apple and other high-tech companies have used riddles and logic puzzles like the ones mentioned in Poundstone’s book for their notoriously grueling job interviews. These "puzzle interviews" have become known as a hot new trend in the recruitment process to filter out the most innovative and intelligent candidates from the
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malunggay and affect the quality of the tea. The malunggay leaves will only be air-dried to wilt and remove excess moisture and it only needs a very light amount of oxidation. After the air drying‚ the next process is pan-drying. In this method‚ heat will be applied to the dried malunggay leaves by dry cooking it in hot pans. Minimal oxidation will happen during this process. To do this‚ heat the leaves in a pan with a very low fire to remove excess moisture and to sanitize it. The leaves should be constantly
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Discuss different strategies for producing wine with low or no SO2. Is there global demand from consumers for such wines? SO2‚ sulfur dioxide has been considered as one of the essential additives for making sound wine‚ which acts as antioxidant and antiseptic. History of sulfur in wine dates back to Roman times when they discovered that wine was kept fresh by burning sulfur candles inside empty wine vessels. However‚ the number of wines produced with low or no SO2 is increasing in these 10 years
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The Rate Of Photosynthesis: Lab report 1) Construct a graph of your data 2) Using the graph‚ estimate the time at which 50 percent of the leaf disks were floating on the surface. The point at which 50 percent of the leaf disks are floating will be you point of reference for future investigations Using the graph the estimated time that roughly 50% of the leaf disks were floating on the surface was around the 10th minute. At the 10th minute our number rose up to
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Curcumin amends oxidative stress and antioxidants status in olfactory lobes‚ cerebrum‚ hypothalamus-hippocampus‚ cerebellum and pons-medulla of mice acutely intoxicated with lindane Abstract: Present study ascertains the neuroprotective potential of curcumin in olfactory lobes‚ cerebrum‚ hypothalamus-hippocampus‚ cerebellum and pons-medulla of mice‚ intoxicated with lindane. Lindane is highly toxic to central nervous system (CNS)‚ causing mental and motor retardation. Oxidative stress due to abnormal
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