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- ProvidethecanreetuPACname OMCNernst equation for pair CIO4|Cr': RT E = E° + nF In «(CIO, )a*(H*) a(Cl¯) RT E = E° + nF Cloa(CIO; )a(H*) a(Cl¯) RT a(CIO, Ja*(H*) E = E° – -In nF a(Cl¯) nF a(CIO, )a*(H*) E = E° + lg RT a(Cl¯)Mass Naz CO3= 1.olcg . Čalculate the theoretical yield (in grams) of the CO2 that should be produced from the mass of Na2CO3 used. Use dimensional analysis. ny es HO ured aret with 67 olen NS inensonlalysis. Use the following equation to calculate the percent yield of the CO2. experimental (actual) x 100 theoretical (calculated) %yield SOB KOH SHO Hew nolesaf SPO be Tivionls
- 4m K R EMetals H X Se.com/u/1/c/MTUAMTYZNTK2OTM3/a/Mig0NjcAMzk0ODA4/delails tals Homework Packet 18.pdf Oper wth UNDERSTANDING ORES Most ores look like ordinary rocks. You would not guess that they contain shiny metal. The earth's crust is made up of many minerals. Minerals can be defined as naturally occuring chemical elements and compounds. People have discovered more than 2,000 different minerals. Many of these contain metals. But because the metal elements are linked with other elements in the minerals, the metals do not show all of their properties. Figure A 1. Most minerals are elements, compounds 2. In order to free the metal from the other elements, a mineral must be synthesized, decomposed Page 3 I 6 Q +Disulfides are compounds that have S— S bonds, like peroxideshave O— O bonds. Thiols are organic compoundsthat have the general formula R— SH, where R is a generichydrocarbon. The SH- ion is the sulfur counterpart ofhydroxide, OH-. Two thiols can react to make a disulfide,R— S— S— R. (a) What is the oxidation state of sulfur ina thiol? (b) What is the oxidation state of sulfur in a disulfide?(c) If you react two thiols to make a disulfide, are youoxidizing or reducing the thiols? (d) If you wanted to converta disulfide to two thiols, should you add a reducingagent or oxidizing agent to the solution? (e) Suggest whathappens to the H’s in the thiols when they form disulfides.Which of the following reactions is/are incorrect? (a) (b) „N2* Br Но H3O* Br2 (c) CUCN CN a & b
- Calculate the amount of lime(ar CaO) that Gn be propared by heating 200 kg of limestome that is 95% Pure Caos M.wt. CaCo3=loo M.Wt Go-56-| CaCos > Cao + Coz 11:09 PMA. Determine whether the curved arrow(s) shown below generate a valid or invalid resonance structure. Draw the resonance structure that would result from each properly drawn arrow and identify the arrow pushing pattern (i.e. allylic positive charge, allylic lone pair, pi bond between atoms of a different electronegativity, lone pair adjacent to a positive charge, alternating pi bonds in a ring.Equal length of magnesium ribben are taken in two test tubes ‘A’ and ‘B\ H2SO4 is added to test tube ‘A’ and H2CO3 in the test tube ‘B’ in equal amounts:(a) Identify the test tube showing vigorous reaction.(b) Give reason to support your answer.(c) Name the gas liberated in both the tubes. How will you prove its liberation?(d) Write chemical equations for both reactions.(e) Out of the two acids taken above(i) which one will have lower pH value.(ii) lowerH+ concentration respectively.
- The maximum solid solubility of carbon in ferrite occurs at 0.022 wt% C and 727 ° C, the eutectoid composition is 0.76 wt% C, the maximum solid solubility of carbon in austenite occurs at 2.14 wt% C and 1147 ° C, and the cementite composition is 6.7 wt% C. For 2122 g of a 3.2134 wt% C steel at 726 ° C, what will be the mass of carbon present as part of a compound?(a) 67.9 g(b) 74.2 g(c) 58.7 g(d) 83.5 gGive the balanced chemical equation when reacting C5H12O with H3O+Cl-Give the solution with proper sig figs. 4.523 g O2 x ( 1 mol O2 / 32.00 g O2) x (– 533.7 kJ/ 3 mol O2) = – 25.14505313 kJ a. – 25.145 kJ b. – 25.14505313 kJ c. – 25 kJ d. – 25.1 kJ e. none of these f. – 25.15 kJ g. – 2 x 10^1 kJ h. – 3 x 10^1 kJ i. – 25.14 kJ