Chemistry question and answers for October 06, 2023
- Q Balance the following redox equations either in acid orbase:a. HClO -> Cl^(-) + ClO3^(-) [acid]b. ClO4^(-) + Br2 -> Cl^(-) + BrO2^(-) [base]c. H2S + BrO3^(-) -> SO3^(2-) + Br2...
- Q Consider the following reaction:CO(g)+2H2(g)⇌CH3OH(g)CO(g)+2H2(g)⇌CH3OH(g)The reaction between COCO and H2H2 is carried out at a specifictemperature with initial concentrations of COCO = 0.26  MM and H2H2 = 0.49  M M. At equilibrium, the...
- Q Explain the significance of correlating the microscopic findingswith the physical and chemical urinalysis results.
- Q Are the number of lone pairs of electrons on the central atomsthe main factor that's used to determine the molecular shape orgeometry?
- Q What is the definition of an oxidation/reduction reaction? Writedown three chemical equations for this type of reaction that occursin a natural process. Indicate their chemicalvalences before and after a reaction...
- Q Calculate the frequency of the light emitted when an electron ina hydrogen atom makes each of the following transitions. Express ininverse seconds.a) n=4?n=3b) n=5?n=1c) n=5?n=4d) n=6?n=5
- Q For an incident gamma-ray interacting with an inorganicscintillator, describe the interaction of the gamma-ray, howscintillation light is generated, how it is converted into anelectrical signal, and how it is amplified.
- Q What are the relative pKas of strong electrophiles vs. strongnucleophiles? Please explain the difference between electrophilesand nucleophiles.
- Q What is the strongest interparticle force in each of the fivecompounds: KMnO4, sucrose, Iodine, NiSO4 6H2O, naphthalene? Whatrelationship exists between the IMF and the solubilities?
- Q Calculate the pH of a 0.080 M carbonic acid solution, H2CO3(aq),that has the stepwise dissociation constants Ka1 =4.3 × 10-7and Ka2 =5.6 × 10-11.Group of answer choices10.251.10
- Q write orbital diagramfor each ion and determine if the ion is diamagnetic orparamagnetic.a. Cd2+b.Au+ c.Mo3+ d. Zr2+Provide your answer:example :paramagnetic, diamagnetic, etc., accordingly to a, b,c,and d.
- Q Describe how aluminum metal is isolated from its natural ore,as well as the processes incolved in its purification
- Q The equilibrium constant (Ka) for benzoic acid is 6.46 x10^-5.Calculate the ratio of benzoic acid to benzoate ion in solutionpH=2.00. Then calculate the same ratio at pH=4.00.
- Q What element is being oxidized in the following typeof reaction 4 PBr3 (l) > P4 (s) + 6 Br2 (l)?A. P or Br
- Q A 280.0mL buffer solution is 0.220M in acetic acid and0.220M in sodium acetate.A. What is the initial pH of this solution?B. What is the pH after addition of 0.0050mol of...
- Q How to draw syndiotactic triad of poly(methyl methacrylate) andbenzoyl peroxide initiator?
- Q AP Chemistry Algorithmic Question 27Part AMagnesium burns in air with a dazzling brilliance to producemagnesium oxide:2Mg(s)+O2(g)→2MgO(s)When 5.50 g of magnesium burns, the theoretical yield of magnesiumoxide is ________ g.Part BIf...
- Q Consider the titratkon of 50.0 mL of 0.200 MHC2H3O2 (Ka = 1.8 x10-5) with 0.100 M NaOH.(A.) Calculate the pH of theHC2H3O2 before the addition ofNaOH(B.) Calculate the pH of...
- Q A solution of household bleach contains 5.25% sodiumhypochlorite, NaOCl, by mass. Assuming that the density of bleachis the same as water, calculate the volume in mL of householdbleach that should...
- Q Compute the pressure in bar of hydrogen gas produced at 311 K ina container of volume 1.59 L that results when 2.34 g of aluminumreact with 103 mL of a...
- Q Based on your observations following the addition of (a)Fe(NO3)3, (b) NH4SCH, (c)SnCl2, (d) AgNO3, (e)Na2HPO4, and (f) NH3, which waydid each of these reagents causethe equilibrium to shift?Considering Le Chatelier's...
- Q Consider the titration of the weak acid HA with NaOH. At whatfraction of Ve does pH = pKa -1? At what fraction of Ve does pH =pKa +1? Use these...
- Q (a) A mixture containing 2.15 g each ofCH4(g), C2H4(g)and C4H10(g) is contained in a 1.50L flask at a temperature of 25°C.Calculate the partial pressure of each of the gases in...
- Q 1) A power plant with an efficiency of 65% combusts 500,000metric tons (MT) of anthracite coal per year to generateelectricity. It has been established that this type of coal has...
- Q How to calculate the weightpercent Na2CO3 in impure base sample???I did my calculations but itsomehow doesnt make senseFirst we find the moles of HCl=0.1M HCl x volume of HCl used...
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