[References]Use the References to access important values if needed for this question.Taking logarithms and antilogarithms is necessary to solve many chemistry problems. For practice, complete the following table, where N is a number.log N79.1-0.1385.06Submit AnswerRetry Entire Group4 more group attempts remainingPreviousNextSave and ExitCengage Learning | Cengage Technical Support ment/takeCovalentActivity.do?locator=assignment-take[References)Use the References to access important values if needed for this question.Taking logarithms and antilogarithms is necessary to solve many chemistry problems. For practice, complete the following table, where N is a number.log N7.911.778-0.054Submit AnswerRetry Entire Group4 more group attempts remainingPreviousNextSave and Exit

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Zinc in its 2+ oxidation state is an essential metal ion for life. Zn2+ is found bound to many proteins that are involved in biological processes, but unfortunately Zn2+ is hard to detect by common chemical methods. Therefore, scientists who are interested in studying Zn2+- containing proteins will frequently substitute Cd2+ for Zn2+ since Cd2+ is easier to detect. Based on the properties from this chapter and their positions in the periodic tables, provide one pro and one con of using Cd2+ as a Zn2+ substitute?
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Excessive nutrients dumped into waterways can create “algae blooms” that rapidly consume all of the dissolved O2 and trigger production of enough H2S to create “dead zones” like the ones that exist off the coast of Denmark and in the Gulf of Mexico immediately south of the Mississippi River delta. a. Since Group 16 element substitution is a recurring theme in that Group’s chemistry –e.g., oxygen substituting for Se and Te in the production of H2Se and H2Te, respectively –maybe molecular oxygen (O2) could be bubbled into these dead zones and react with the H2S.Write out a balanced chemical equation for the reaction between H2S and O2 to form elemental sulfur (S8) as a product that would precipitate out. b. Using bond dissociation energies, calculate if this reaction would be thermodynamically favorable. c. If your answer to part (b) is “yes”, do you think that simply bubbling O2 into these waters would work? Justify your answer.
Find the density and IPF values for cristobalite. (Si4+ ion radius: 0.039 nm, O2- ion radius: 0.132 nm, Si atomic weight: 28.09 g/mol, O atomic weight : 16.00 g/mol)
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‏Write a comment on this word in one line Arsenic is a global metal.Enviromental pollution by arsenic occurs by natural issues such as volcanic eruption,soil erosion and anthropogenic activites such as mining, release of industrial waste(burning of fossil fuel. Regarding Industrial production this includes insecticides,herbicides ,fungicides etc.Inaddition it's used in veterinary medince to name a few, ridding tapeworm in sheep & cattle.People that live within countries of large populations in West Bengal, Bangladesh, Thailand, Inner Mongolia, Taiwan, China, Mexico, Argentina, Chile, Finland and Hungary are more exposed to high levels of arsenic in their drinking water. Potential exposure to arsenic can occur through ingesting,inhaling and contact through skin. Workers in agriculture can be exposed. Toxicity of Arsenic depends on exposure doses,frequencies and duration. A particular mechanisms is the impairment of cellular respiration.
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How would you describe the slope of a rank abundance curve that vary with increasing species evenness?
The attractive force between two ions in Na20, Fc is 8.64x10-9N. What is the bond length a0 (in nm) given that valence of the charged Na+ is Z1=+1, for O-, is Z2 =-2, the charge of a single electron q is 0.16x10-18 C and the proportionality constant k0=9x109 V.m/C? Note that K=k0(Z1q)(Z2q) and that 1 V.C = 1 J.
In his article “Speaking the Same NomenclatureLinks to an external site.,” Michael D. Mosher—chair of the American Chemical Society’s Committee on Nomenclature, Terminology, and Symbols—discusses why it is so important for chemists to speak the same language. Take a moment to read the article. In your initial post to the discussion, answer the following questions: What is so important about nomenclature that entire committees have been established to ensure we pay attention to it? How might the lack of a common nomenclature be a safety concern? Share a potential scenario in which a misunderstanding of key nomenclature could lead to a major disaster.
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Congratulations, you have just been hired at a local laboratory. Your first task is to prepare 10.0 mL of a 1.50 x 10-6 M solution of a small protein (FW: 3600 g/mole). Available to you are an electronic balance that is accurate to the nearest 0.001 g, a 1.00-mL pipette, and 10-mL volumetric flasks. Describe how to prepare the desired solution. (Note that the amount of protein is so small that you will need to make a more concentrated stock solution and dilute it.)

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