Chemistry question and answers for August 10, 2023
- Q 1. what are the advantages of breast feeding?2. when is breast- feeding contraindicated or notallowed?3. plan a 3 day menu for a pregnant mother. includesnacks and drinks.give justifications of your...
- Q What are the various contributions to the linewidth of an atomicor molecular transition and explain their origin.
- Q How is the mass of a compound related to its chemicalformula?.....I needed some explanations and examples. thanks
- Q Draw the internuclear potential as a function of nuclearseparation for the ground and excited states of a molecule wherethe equilibrium separation of the (bound) excited state is smallerthan that in...
- Q Consider the Russell- Saunders coupling scheme for twonon-equivalent electrons in an excited 2p1 3d1 configuration. Forall parts (a) to (c) give your reasoning:(a) Show that strong coupling between orbital angular...
- Q Explain the origin of d-d, metal-to-ligand charge transfer, andligand-to-metal charge transfer transitions for octahedral metalcomplexes with appropriate molecular orbital diagrams. Also,comment on the allowance of these transitions using appropriateselection rules.
- Q You have two aqueous solutions: solution A is 20 mL of 1 MMgSo4. Solution B a 25 mL of 1.5 MNa2SO4.You take 5 mL of solution A and mix it...
- Q For the exothermic reactionPCl3(g)+Cl2(g)?PCl5(g)Kp = 0.200 at a certain temperature.A flask is charged with 0.500 atm PCl3 , 0.500atm Cl2, and 0.300 atm PCl5 at this temperature.What are the equilibrium...
- Q 1.A student prepares 50.0 mL of a 2.5M solution by diluting 10.0 mLof a stock solution.a.) Calculate the concentration of the stock solution.b.) Calculate the volume of H2O used.2. What...
- Q The Hill equation is used to describe cooperativity:a) Write down the Hill Equation for mutant hemoglobin proteinthat has a Hill coefficient of 2.b) If the P50 of this Hb is...
- Q A 10.010.0 mL sample of whiskey was diluted to 500.0 mL. A4.004.00 mL aliquot of the diluted sample was removed and theethanol, C2H5OHC2H5OH , was distilled into 50.00 mL of0.022500.02250...
- Q Determine the rate constant at 10 degrees C? If a reactionmixture is 0.160 M in C2H5Br, and 0.260 M in OH−, what is theinitial rate of the reaction at 85...
- Q it has been said that producing oil is less destructive to theenvironment than producing coal , explain the reasoning behind theclaim ? (type here please in simple language)
- Q Describe the structure of a steroid. Be detailed.
- Q Propose a reaction scheme for the synthesis ofhyperbranched polyamide, in which there is no possibility ofgelation. What are the reaction characteristics, which would affectthe molar mass of the polymer.
- Q Determine the pH at the equivalence (stoichiometric) point inthe titration of 48 mL of 0.29 M CH3NH2(aq)with 0.19 M HCl(aq). The Kb of methylamineis 3.6 x10-4.
- Q Calculate the pH for each of thefollowing cases in the titration of of 100.0 mL of 0.180 M HClO(aq)with 0.180 M KOH(aq). The ionization constant for HClO is4.0x10^-8A. After 50.0...
- Q What are the essential features of the following type ofionization mode used in mass spectrometry? Include whether it is ahard or soft process and what are the main benefits and/orlimitations.a)...
- Q Calculate the pH during the titration of 20.00 mL of 0.1000 MC2H5COOH(aq) with 0.1000 M KOH(aq) after 19.9 mL of the base havebeen added. Ka of propanoic acid = 1.3...
- Q 21. Why does fat accumulate in the liver due to alcoholconsumption? Select all that apply.A. The accumulation of FADH2 activates fatty acid synthesis inthe liverB. The accumulation of NADH and...
- Q What details should be noted when measuring samplewith Gel Permeation Chromatography?Btw, Merry X-Mas !!
- Q Based on the color of the solutions, determine the direction ofthe reaction equilibrium shift upon addition of each reagentinvestigated and write the chemical reaction involving the reagentthat is responsible for...
- Q 1) Van der Waals forces include both attractive and repulsivecomponents.Select one:True False2) Like Coulombic forces, van der Waals forces show a distancedependence .Select one:True False3) The weakest hydrogen bonds have...
- Q Can someone explain to me the difference between atomic mass,mass number, and atomic weight.I have 4 different textbooks saying different things and I am soconfused.Is atomic mass and mass number...
- Q 1-A solution has a temperature change of 20 K. What is thetemperature change in degree Celsius?Flag this QuestionQuestion 2Students used two thermometers in Thermo lab. If boththermometers consistently read temperature...
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