Chemistry question and answers for July 05, 2023
- Q Relate the following structures, molecules, events/processes,etc. to transcription and to one another : 1. Introns 2. Exons 3.Eukaryotes 4. Prokaryotes 5. Euchromatin 6. Heterochromatin 7. Pre- mRNA (initial transcript) 8....
- Q 1. An aqueous solution of calcium chloride, CaCl2, is 3.464 Mand has a density of 1.2816 g cm-3. Assuming you have 1 liter ofthis solution answer the following questions.a) Use...
- Q Given the spectral data, determine the structure of thefollowing compound. Show all work. Combustion analysis: C: 85.7% H:6.67% MS: Molecular ion at m/z= 210, base peak at m/z=167 1H-NMR:7.5-7.0 ppm...
- Q Although knowing exactly how much Aspirin is in a tablet is goodindicator ofhow much dose was given to a person, it does not however, give theexactquantity absorbed into the bloodstream....
- Q 1.How much heat (in kJ) is required to warm 13.0 g of ice,initially at -10.0 ∘C, to steam at 109.0 ∘C? The heat capacity ofice is 2.09 J/g⋅∘C and that...
- Q The entropy of sublimation of a certain compound is 20.7 J K–1mol–1 at its normal sublimation point of 101 °C. Calculate thevapour pressure (in torr) of the compound at 9...
- Q In photography, unexposed silver bromide is removed from film bysoaking the film in a solution of sodium thiosulfate,Na2S2O3. Silver ion forms asoluble complex with thiosulfate ion,S2O32-, that has the formulaAg(S2O3)23-,...
- Q Free chlorine in water distributes between HOCl and OCL^-species according to the following reaction:HOCl <--> H^+ + OCl^-K=[H^+][OCl^-]/[HOCl] = 10^-7.6 @ 25 degrees CA water has a pH of 7.8,...
- Q - (a) What factors determine whether acollision between two molecules will lead to a chemicalreaction?(b) According to the collision model, why doestemperature affect the value of the rate constant?(c) Does...
- Q Choose all that apply. Solids, liquids, and gases can bedistinguished by their?A. Molecular LevelB. ShapeC.TemperatureD. Kinetic EnergyE. MassF. Density
- Q A 50.0-mL solution containing Ni2+ and Zn2+ wastreated with 25.0 mL of 0.0452 M EDTA to bind all the metal. Theexcess unreated EDTA required 12.4 mL of 0.0123 M Mg2+...
- Q a mixture of 0.2 mol of NO, 0.1 mol of H2 and 0.2 mol of H2O isplaced in 2.0 L at 300 K. At equal [NO] = 0.062. Calculate K
- Q Suppose that 200.0mL of a 0.1220 M HCL solution was added to afull antacid tabet containing CaCO3. The HCl fully reacted with theCO3^2- and the excess HCL was then back...
- Q Please select ONE of the questions below to answer. Use GCUstyle (no first-person, no contractions, no quotes). Support yourresponse with references from course articles or text readings.Every student’s response is...
- Q suppose 1.00 mol of ice at -30.0c is heated at ... QuestionSuppose 1.00 mol of ice at -30.0C is heated at atmospheric pressureuntil it is converted to steam at 140.C....
- Q Be sure to answer all parts.If 2.00 mL of 0.100 M NaOH are added to1.000 Lof0.800 M CaCl2,what is the value of the reaction quotient and will precipitationoccur?Q =  ×10 (Enter...
- Q Ethyl chloride (C2H5Cl) boils at 12∘C. When liquid C2H5Cl underpressure is sprayed on a room-temperature (25∘C) surface in air,the surface is cooled considerably.Assume that the heat lost by thesurface is...
- Q For a particular redox reaction BrO– is oxidized to BrO3– and Agis reduced to Ag. Complete and balance the equation for thisreaction in basic solution. Phases are optional.
- Q I'm doing a experiment for organic chemistry. I'm extractingamino acids from lentils and quinoa. I know which amino acids arein them. I need help on what to write for the...
- Q Spartan Lab Questions:1. Discuss the trend in homonuclear double bond energies goingdown Group 14. Use the HOMO‑LUMO gaps that you have determined tofacilitate your discussion. Are there significant differences inthe...
- Q 4.12 Production of1,3-propanediolA process for microbial synthesisof 1,3-propanediol is being developed for the manufacture of'green' polyester fabric from renewable resources. Under anaerobicconditions, a selected strain of Klebsiella pneumoniae convertsglycerol ((231-1803)...
- Q A 2.00 g sample of a powdered fruit drink containing citricacid, required 20.3 Ml of 0.113 M NaOH for complete neutralization.calculate the percent citric acid in the sample, Please show...
- Q a) What is the nickel ion concentration in a solution preparedby mixing 379mL of 0.419 M nickel nitrate with 435 mL of 0.363 Msodium hydroxide? The Ksp of nickel hydroxide...
- Q Sodium chloride has a density of 2.17 g/cm3. What is the closestNa+...Cl- separation? Be sure your answer is given inpicometers.
- Q Balance in neutral solution: MnO4- + S2O32- ---> SO42- + MnO2I'm specifically having trouble with using H2O, H+, and OH- inbalancing the half reactions.
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