Chemistry question and answers for September 05, 2023
- Q 9.) As mentioned below, you are required to design your ownprocedure for determining the heat of dissolution of your chosensalt with a coffee cup calorimeter. Answer the following questionsand consider...
- Q In the replacement reaction of magnesium nitrate with tin, howmany grams of magnesium would be produced if 58.9 mg of magnesiumnitrate? Report your answer with 3 significant figures.2 Mg(NO3)2 +...
- Q Citric acid (192.13 g/mol) is a triprotic acid with thefollowing chemical formula: H3C6O7H5.The acid dissociation constants for citric acid are:Ka1 = 7.1 x 10^-4 M; Ka2 = 1.7 x 10^-5...
- Q Platinum has a specific heat of 0.133 J/gK. If 250.0 g ofplatinum at 1000.0°C is dropped into 115mL of waterat 20.0 °C, will the water boil?
- Q A 2.550
- Q Vanillin Reduction with Sodium Borohydride to form VanillylAlcoholStarted with 2.517g vanillin and 5.0mL NaBH4Crude Product= 7.568gRecrystallized Product= 2.297ga) Calculate the %yield for both the crude and \"fully\"synthesized productb) Explain why...
- Q Explain how an organic solvent like hexane could inhibit enzymeaction. . Explain how addition of base could inhibit enzymeaction.
- Q 1- a. If ΔHsolution is slightly endothermic, a solution mightform. Explain whyb. If ΔHsolution is highly endothermic, a solution can never form.Explain why.c. If ΔHsolution is exothermic, a solution will...
- Q For the following reaction, 15.1 grams of nitrogen monoxide areallowed to react with 5.41 grams of oxygen gas .nitrogen monoxide(g) + oxygen(g) nitrogen dioxide(g)What is the maximum mass of nitrogen...
- Q The elimination experiment performed this week proceeds via E2mechanism according to the textbook. As you have learned inlecture, there is stereoselctivity as well as regioselctivityassociated with the E2 mechanism. What...
- Q Consider the following reaction:2A+3B→3C+2DUse the following data to determine the rate of reaction interms of the disappearance of reactant A at time = 20 s.Time (s)02040[A](M)0.04000.02400.0180Part B::Consider the following reaction:2A+3B→3C+2DUse...
- Q 1.  If a reactant is added to a reaction atequilibrium, which way will the reaction shift to re-establishequilibrium (use forward or backward)? Why?2.  If a reaction is endothermic, is heat...
- Q 1) Consider the equilibrium reactionN2(g) + 3 H2(g) ↔ 2 NH3(g) +91.8 kJUsing Le Chatelier’s Principle, Name two specific ways thisequilibrium can be shifted to the right to increase production...
- Q 500.0mL of 0.120M NaOH is added to 535mL of 0.250M weak acid(Ka= 5.88*10^-5) What is the pH of the resulting buffer?
- Q You need to prepare an acetate buffer of pH 5.33 from a 0.631 Macetic acid solution and a 2.20 M KOH solution. If you have 480 mLof the acetic acid...
- Q Calculate the theoretical yield of the ester formed by the acidcatalyze reaction of 10.0ml of isobutyl alcoholic and 12.0ml ofpropionic acid.Someone please help me with these calculations, I don't evenknow...
- Q Please enter the values you calculated for the concentrations ofTartrazine and Allura Red in the mixture. (Use 3 significantfigures.)Slope of TZ at 430 nm= y=0.0218xSlope of AR at 430 nm=...
- Q Illustrate and explain the importance of the urea cycle as itrelates to nitrogen disposal. Explain the role of NAG in theregulation of CPSI activity and how this affects urea cyclefunction....
- Q Calculate: grams of CO2 generated by a car for every kilometer Idrive usings the quantiy of CO2 produced in part above (answer:3088.2 g CO2) and kilometer distance traveled in part...
- Q Solution Investigation Question: What are some of the keycharacteristics of unknown sample of an aqueous solution containingan ionic compound?Specific questions: 1. Given that the cation is from Group 1A,what is...
- Q Write the balanced chemical reactions for the dissolutionreactions AND the corresponding solubility product expressions foreach of the following solids. Lastly, please calculate thesolubility of each compound in pure water ignoring...
- Q All one question with a few different partsUse the data to sketch the phase diagram for xenon (Xe) and thenanswer the questions that follow.Normal boiling point: 165 KNormal melting point:...
- Q Plants produce sugar by photosynthesis. They absorbCO2, H2O and heat to produce sugar and oxygen. CO2 + H2O ? C6H12O6 + O2 (Unbalanced)How much sugar will be produced if 8.0000 x10-3 ...
- Q In the bromination reaction of a chalcone, trans-4-nitrochalconereacts with Br2/CHCl3 to produceerythro-2,3-diBromo-3-(4-nitrophenyl)propiophenone. The product isa racemic mixture.a) Draw the structure of the enantiomers you form and assign R& S to...
- Q GaAs is zinc-blende with a = 0.56 nm, ε = 12.8, me* = 0.067me,and mh* = 0.2me.(a) What is the exciton binding energy and radius?(b) How many unit cells are...
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