Chemistry question and answers for July 03, 2023
- Q A) Use the Clapeyron equation to estimate (in bar/K) the slopeof the solid-liquid phase boundary of water given the enthalpy offusion is 6.008 kJ/mol and the densities of ice and...
- Q What are some errors (not human) that can occur when using sizeand ion exchnage chromatography
- Q A petroleum gas mixture containing 65% propane (C3H8) and 35%propylene (C3H6) is burned with 40% excess air. The flow rate ofthe gas mixture is 200 mol/h. All of the propylene...
- Q What observed rotation is expected when a 1.46 M solution of(R)-2-butanol is mixed with an equal volume of a 0.730 M solutionof racemic 2-butanol, and the resulting solution is analyzed...
- Q (a) Sketch the titration curve for an alkalinity test in whichthe water sample had an initial pH of 6.35. In that test, 15 mL of0.1 N acid was added to...
- Q Question one: Assume that dry air consists of only 20.00% oxygenand 80.00% nitrogen by volume.What is the density of dry air at 0.90030 atmand 22.31 ∘C?Answer in g/L to four...
- Q What is the Lewis Structure for A. Cu2O B. CRO_3^2- C. MnO2 D.MnO_4^1- Pls explain how to do lewis structures with transitionmetals
- Q A solution contains Cr3+ ion and Mg2+ ion. The addition of 1.00L of 1.52 M NaF solution is required to cause the completeprecipitation of these ions as CrF3(s) andMgF2(s). The...
- Q Calculate the pH of a 0.135 M solution of morphine if its pKb =5.79
- Q The third order rate coefficient for:O + O2 + MÂ Â -> O3 +Mis given by the expression: k = 6.0x10-34*(T/300)-2.4 cm6 molecule-2s-1This reaction is in the low pressure, i.e. termolecular,limit...
- Q 1. If by mistake, chemist used 100% ethanol rather than THF as asolvent, would the synthesis proceed as expected? Why or whynot?2. Why is bromotoluene added dropwise to the reaction...
- Q calculate the percentage by mass of oxygen in the followingcompounds. C17H19NO3
- Q 4.a. State Beer’s Law. What is meant by the statement that Beer’sLaw is a limiting law?b. Describe two apparent deviations from Beer’s Law and indicatehow the deviation specifically affects the...
- Q Consider the equilibrium between SbCl5, SbCl3 and Cl2.SbCl5(g)<--------> SbCl3(g) + Cl2(g) K = 2.36×10-2 at 552KThe reaction is allowed to reach equilibrium in a 6.80-L flask.At equilibrium, [SbCl5] = 0.359...
- Q What are the R and T forms of hemoglobin how does the hemestructure differ in each? What forces stablize the T state?
- Q Calculate the pH of a mixture that contains 0.18 M of HCl and0.25 M of HBrO.
- Q Do enzymes affect the equilibrium constant of a reaction? Why orwhy not? Use the concepts of thermodynamics versus kinetics toformulate your answer.
- Q Calculate the pH of an aqueous solution that is 1.0 M Na2CO3.Ka2 for H2CO3 is 4.7 × 10-11. Please post full work andexplanation. Thank you.
- Q Kemmi pipets 25.00 mL of pure 1-propanol(C3H7OH, a liquid organic alcohol) into a100.0 mL volumetric flask. She dilutes it with water. Help hercalculate the strength of her diluted solution.Volumes: 25.00...
- Q 1) if the cost of both the alcohol and carboxylic acidwere prohibitive, how would you maximize the use of your Fischeresterification product while keeping costs down?2) why did you wash...
- Q What is the only possible value of mâ„“ for an electron in an sorbital?Express your answer numerically.2.Which of the following set of quantum numbers (orderedn, â„“, mâ„“, ms) are possible...
- Q The following reaction was performed in a sealed vessel at 742∘C :H2(g)+I2(g)⇌2HI(g)Initially, only H2 and I2 were present at concentrations of[H2]=3.50M and [I2]=2.00M. The equilibriumconcentration of I2 is 0.0900 M...
- Q an unknown amount of acid can often be determined by adding anexcess of base and then back-titrating the excess. A 0.3471 gsample of a mixture of oxalic acid, which has...
- Q In each pair, pick the molecule which would have the higher Rfvalue. Explain your answers.a. Phenyl chloride or phenolb. N,N-dimethylformamide or 1,3-butadienec. Acetonitrile or benzened. Decanol or propanol
- Q for the equation 2KCl+CaF2->2KF+CaCl2,55.1 grams of KCl is reacted with 46.7 grams of CaF2, how manymoles of KF will be produced if all KCl reacts?
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