Quiz 5 KEY

354 Example: Calculate the spin-only magnetic moment for the following atoms and ions. (Remember the rules for electron configurations associated with the ionization of transition metals Fe Fe2+ Cr Cr3+ Cu Cu2+ -1

Which absorbance spectrum from the previous problem represents the dye solution with the greatest concentration? 1.4 1.2 Curve 3 0.8 0.6 Curve 2 Curve 1 0.4 0.2 0.2 Wavelength (nm) O All three are approximately the same concentration O Curve 3 O Cannot be determined from the information given Curve 2 Curve 1 700 580 Absorbance

Match the species on the left (a-e) with their corresponding colors on the right (1-5): a) Hg2Cl2                                1. Green b) PbCrO4                                  2. Black c) NiS                            3. Yellow d) (NiCl4)2-                4. Brown e) Fe(OH)3                       5. White

Calculate the p-function for each ion. [Rb*] = 0.395 M pRb = [Co?+] = 6.65 x 10-6 M pCo = O E O hulu stv MacBook PrO GSearch or type URL % & 41 5 6 8. 09 delete RI Y. K V. BI 30 MOSISO command option

ge 1: 4 ! Q A 2 5 -- 3 :0 F1 @ 2 30% F2 # 3 Based on the following spectrum, what color would you expect this solution to appear? WE 1.8 1.6 Absorbance 1.4 1.2 1 0.8 0.6 0.4 0.2 0 380 Trouble viewing? Oa) red Ob) yellow 80 F3 O d) purple c) orange e) blue $ 4 430 Q F4 % сч оро 5 480 0 F5 R T A 6 530 580 Wavelength (nm) F6 Y & 7 K F7 630 nm- Orange 590 nm 630 U * Red Yellow 8 F8 750 nm 400 nm 680 560 nm I ( 9 F9 S D F G H J K Violet Green ) 0 430 nm 480 nm Blue F10 0 L P F11 Ć + { [

Which ion will be attracted to a magnetic field? A) C²⁺ B) O²⁻ C) F⁺ D) Be E) All of the above

QUESTION 6 In a polarised electronic absorption spectrum for a molecule with D3h point symmetry a a2" to e' transition is allowed in which linear polarisation? X y Not linearly polarised Z

You have the following solutions, A-E. Which solution has the highest absorbance value at 280 nm? Solution A: 1.0 mM Gly-Ser Solution B: 10 mM Gly-Ser Solution C: 1.0 mM Phe-Ser Solution D: 1.0 mM Tyr-Ser Solution E: 1.0 mM Trp-Ser Solution C Solution E Solution B Solution D Solution A

I wanna know how to make V = abc(1 − cos2α − cos2β − cos2γ + 2 cos α cos β cos γ)1/2 (the volume of triclinic). When a≠b≠c, α≠β≠γ ≠90°

Which of the following statements regarding IR spectroscopy is incorrect?

V 67°F cloud, energy Which is the ground state? Use this diagram to complete the table below. 25 C Explanation E How many excited states are there? Check How many lines are in the absorption line spectrum? (pick one) ✓ 0 0 1 Search LACROECO CON

1. Which proton has the largest multiplicity? Smallest multiplicity?

9. Which of the following is paramagnetic?  Z of Zn = 30, Cr = 24, O =8 Group of answer choices a) Zn+2 b) Cr+2 c) Zn d) O-2

This arrangement of water molecules in the pore of aquaporins Omo=c -O=o=c 00101c H-N Asn H-N Asn -O=³0=c -O=o=c -Omo=c allows hydrated ions to flow through the pore prevents movement of protons through the pore O facilitates proton hopping from water molecule to water molecule in the pore O both A and C

I have 4 Questuion    Q1: find the A , T , T% of a 2.4X10-3 mol L-1 solution of a substance whose molar absorptivity is 313 L M-1 cm -1 at 520 nm when measured in a cell of 2.00 cm pathlength ؟   Q2: A sample in a 1 cm cuvette transmits 79% of light at 280 nm , what is the absorbance ? if the molar extinction coefficient is 2.0 M-1 cm-1 , what is the concentration of the sample ? Q3 : the aspirin an analgesic form complex with metal ion which has a molar absorpitvity of 8000 L M-1 cm-1 at ( lenada max 435 nm ) . calculate the absorbance of 6.77 X 10-5 M solution of the complex measured in a 1.00 cm cell at 435 nm ? Q4 :Find the A and T% of a 6.5X10-4 Mol L-1 solution of a drug ( molecular weigth 200 ) whose absorpitvity is 0.026 L cm-1 g-1 at 520 nm when measured in a cell of 2.00 cm pathlength ?

Name: Intensity 80 1s 70 Peak X 8 7 Due: Wed., 3/1/23 Peak Y Page 2 / 9 40 Binding Energy (MJ/mol) D t 8 I 2 2. A sample containing atoms of C and F was analyzed using x-ray photoelectron spectroscopy. The portion of the spectrum showing the Is peaks for atoms of the two elements is shown above. Which of the following correctly identifies the 1s peak for the F atoms and provides an appropriate explanation? (A) Peak X, because F has a smaller first ionization energ than C has. (B) Peak X, because F has a greater nuclear charge than C has. (C) Peak Y, because F is more electronegative that C is. (D) Peak Y, because F has a smaller atomic radius that C has. + 0 AP Chemistry Sign out

Unrounded Rounded ε∗,L/μmolε∗,L/μmol 0.0259825 0.0260   heres data: TZ # Concentration Absorbance at 430 nmnm 1 33.6480 0.931 2 25.2360 0.757 3 16.8420 0.210 4 8.41200 0.137 5 4.20600 0.122

t-Bu Me Pt Ме 1 t-Bu assign point group of this complex

1 Draw both a state of التاريخ الموضوع : an orbital Correler Thorant Correlation diagran for [25+? reaction the Sophies + a 0 Endo 99% Ex01

A solution of copper(II) sulfate is observed to be blue in color. The maximum absorbance is expected to occur in what wavelength range? 500-560 nm (green) 380-435 nm (violet) 610-750 nm (red) 580-595 nm (yellow) 435-480 nm (blue)

5) Given the absorbance spectrum shown below, what wavelength of light would you use for nickel(II) ion? Explain your answer. Absorbance 0.8 0.6 0.4 1 0.2 0 350 400 Absorbance vs. Wavelength for Nickel(II) ion 450 500 550 600 650 Wavelength (nm) 700 750 800 850

How would you calculate Ɛ from the gradient of an absorbance vs concentration plot?

A specific steroid has a max of 278 nm and a molar absorptivity e of 11.500 L mol em. What is the concentration of the compound in a solution whose absorbance at 278 nm is A = 0.085 with a sample pathlength of 1.00 cm? %3D concentration:

The complex [FeSCN]2+ has an absorptivity of 6.14 × 10-2 L/ (mg-cm) at a wavelength of 580 nm. The transmittance of a solution sample was measured in a 1.00 cm cell, and the percent transmittance %T was 46.9%. Calculate the concentration of the solution in ppm. concentration of the solution: 5.62 x10-7 ppm + Post a new auestion 14 étv hulu MacBook Pro $ へ & + 4 6. 7 8. 6. %3D R T Y U F G H K ...- IT