Chemistry question and answers for August 01, 2023
- Q Aluminum (FCC) with atom radius of 0.1431nm.Find the distance between aluminum lattice plane (100) and(111), and calculate the density of that planes.
- Q Problem 5.1Consider the formation of glucose from carbon dioxide and water(i.e., the reaction of the photosynthetic process):6CO2(g)+6H2O(l)?C6H12O6(s)+6O2(g).The following table of information will be useful in working thisproblem:T= 298 KCO2(g)H2O(l)C6H12O6(s)O2(g)?H?f (kJ...
- Q What is the maximum number of electrons in an atom that can havethe following quantum numbers?A.) n=2; ms= -1/2B.) n=5: l=3C.) n=4; l=3; ml= -3D.) n=4; l=1; ml=1Completely confused! Please...
- Q When 4.00 moles of PCl5 (g) is put in a 1.00 L vessel theequilibrium: PCl3 (g) + Cl2 (g) <--> PCl5 (g) is established.At equilibrium [Cl2]e = 5.20 x 10^-3...
- Q Which of the following gases has the lowest average speed at25?NH2NH2C2H4HeN2
- Q If4 moles of oxygen and 2 moles of nitrogen gas occupy 12 liters at atotal pressure of 6 Atm, the partial pressure of oxygen gas in thecontainer is?
- Q Please explain in detail the mechanisims by which thesebiologicals work on a patient with NSCLC?A) Gefitinib aka IressaB) Erlotinib aka TarcevaC) Afatinib aka Giotrif
- Q how much 5.60 M NaOH must be added to a 420.0 ml of a bufferthat is 0.0205 M acetic acid and 0.0245 M sodium acetate to raisethe pH to 5.75?
- Q Small rocket engines, such as model rockets, contain KClO33 toprovide oxygen for the combustion reaction fueling the rocketmotor. The relevant reaction for KClO33 is: 2 KClO33(s) → 2 KCl(s)+ 3...
- Q Enough of a monoprotic acid is dissolved in water to produce a0.0129 M solution. The pH of the resulting solution is 2.69.Calculate the Ka for the acid.
- Q please answer all or explain.11. Circle the statement that is not true for hemoglobin.A.The R-state has a high affinity for diatomic oxygen.B. 2,3-bisphosphoglycerate stabilizes the T-state.C. Carbon monoxide stabilizes the...
- Q A quantity of 2.30 × 102 mL of 0.900 M HNO3 is mixed with 2.30 ×102 mL of 0.450 M Ba(OH)2 in a constant-pressure calorimeter ofnegligible heat capacity. The initial...
- Q This is a very simpllistic approach to protein folding, whichignores solvent and volume effects, but it allows us to practicewhat we have learned about thermodynamics and kinetics. Enzymes arelong chains...
- Q For the titration of 20.00 mL of 0.150 M HF with0.250 M NaOH,calculate:a) the initial pH;Ka= 6.6 x 10^-4b) the pH when the neutralization is 25% completec) the pH when...
- Q When CS2(g) (6.828 mol) and 27.31 mol ofH2(g) in a 360.0 L reaction vessel at 382.0 °Care allowed to come to equilibrium the mixture contains 52.58 gramsof CH4(g). What concentration...
- Q For the reaction A+B+C→D+E, the initial reaction rate wasmeasured for various initial concentrations of reactants. Thefollowing data were collected: Trial [A] (M) [B] (M) [C] (M)Initial rate (M/s) 1 0.20...
- Q Based on your research, respond to the following: What are thedifferences between alkenes and alkynes? What are the differencesbetween cis- and trans-isomers? How are cistrans isomers used fornight vision?
- Q Piperazine, HN(C4H8)NH, is a diprotic weak base used as acorrosion inhibitor and an insecticide and has the followingproperties: pKb1=4.22pKb2=8.67 For writing the reactions of thisbase in water, it can be...
- Q The atmosphere slowly oxidizes hydrocarbons in a number of stepsthat eventually convert the hydrocarbon into carbon dioxide andwater. The overall reactions of a number of such steps for methanegas is...
- Q For the reaction shown, compute the theoretical yield of theproduct in grams for each of the following initial amounts ofreactants.Ti(s)+2F2(g)→TiF4(s)a. 1.0 gTi; 1.0 gF2b. 4.8 gTi; 3.2 gF2c. 0.388 gTi;...
- Q Assuming that no equilibria other than dissolution areinvolved, calculate the molar solubility of each of the followingfrom its solubility product:(a) Ag2SO4(b) PbBr2(c) AgI(d) CaC2O4∙H2O
- Q Why is charcoal sometimes used in recrystallizations? How doesit function? Why should you avoid using large amounts? \"Activatedcarbon\" is used in air and water purifiers. How does it work?
- Q To make 10X gel electrophoresis running buffer, 30.0 g Trisbase, 144.0 g glycine, and 10.0 g SDS must be dissolved into 1000mL water. The working stock is a 1X concentration....
- Q which is easier to dye? Wool or Nylon and why?
- Q 1a- Discuss the vaporization of water in standard condition at298 K in term of: - exothermicity and endothermicity - change ofentropy of the system and the surrounding - spontaneity of...
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