Lab 5- Group X - Analyst RRD-1

Question B1 The material rubidium antimony selenide, Rb3SbSe3, is known to have a cubic crystal structure. A diffraction experiment using Cu Ka radiation of wavelength X = 1.5406 Å showed peaks at 2012.319, 15.103°, 17.456°, 19.536°, 21.421°, and 24.784°. a) Index each of these peaks (that is, calculate possible h, k, and I values for each of them). Show that these data are consistent with a cubic unit cell, and calculate its unit cell parameter a. Which cubic Bravais lattice (i.e., simple cubic, body-centred cubic, or face-centred cubic) is most appropriate? On the other hand, the related compound rubidium manganese selenide, RbMnSe2, has a body-centred tetragonal structure with unit cell parameters a = 4.266 Å and c = 14.033 Å. Its motif consists of a Rb atom at (0, 0, 0), a Mn atom at (½, 0, 1), and Se atoms at (½, 1, 0.15) and (,,-0.15). b) Draw the unit cell of this structure in projection down the b axis, with the a axis vertical and the c axis horizontal. Draw the Mn atoms as…

You replicate Young's experiment using a helium-neon laser. a) Describe the setup for this experiment  in a drawing b) Describe the possible interference pattern you see on your screen

How to use Fresnel equation to calculate Self- assembled monolayer thickness?

Q. How can physical interferences be minimized? Q. Is background correction more essential with flame or with electrothermal atomizers? Q. How can interference from chloride ions be minimized

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n%20Fiber%20Cables.pdf 717 81% Example Find the bending radius at which the number of modes decreases by 50% in a graded index fiber having the following parameters: a = 2, n2 = 1.5, A = 0.01, a = 25µm, λ- 1.3 μm. %3D %3D ans: 1.0 cm

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Incident beam A-- da B-- SQ + QT %D (3.19) dnki sin 0 + dki sin 0 (3.20) = 2dnkl sin 0 H.W. Derive equation 3.20 (Bragg’s Law) from equation 3.19 using trigonometry formulas. 19

Write a theory section in an experiment report. Please do not copy paste, explain clearly in your own words.  Subject of experiment: Surface Energy, Contact Angle and Young`s Equation

Recall that the 2D Fourier transform essentially maps an image into a collection of patterns. Consider the following k-space coordinates and sketch the pattern they represent. a. k, = kŷ b. kz = 2k (0.5 & + 9) c. kz =2 V3 Take the constant k to represent a pattern with a periodicity of that of the lines on a piece of notebook paper, and scale each of them appropriately.

1 point Danny had three colorless liquids to identify. He finds that each 200mL liquids have 162 g, 250 g, 202 g, labeled each as X, Y, Z respectively. By referring to the table, he was able to identify the three liquids correctly. What substance is liquid Z? * Substance Mass of 1L 810 g 1100 g 1250 g 1040 g A. Alcohol Ethylene glycol (antifreeze) Glycerin В. С. D. Seawater 900 g Vegetable oil Vinegar Е. 1010 g F. G. Water 1000 g O A. Alcohol B. Ethylene glycol O c. Glycerin O D. Seawater O E. Vegetable oil O F. Vinegar O G. Water

6) Hi, Can you solve the question 6 and make explanation please? and if you are gonna use handwrite please make sure that it is readable thank you.  I know that you cant solve multiple options so can you solve the option A and B please

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For problem 35 calculate the thickness of the acetone in micrometers if the wavelength of the source is changed to 568.0 nm!! (5 sig figs)

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Question Three Two aluminium samples, A and B, are to be examined using Bragg reflection. For sample A the first-order Bragg reflection from (111) planes occurs at an angle of 25°00', while for sample B the first order Bragg reflection from (111) planes was at 25°20'. Aluminium atoms are 1.8 x 10-10 m diameter and form an FCC structure. X-radiation of wavelength 1.52 x 10-10 m is used for the analysis of two samples of aluminium. Answer the following questions: (i) Calculate the lattice parameter of an aluminium atom. (ii) Calculate the interplanar distances for the two samples. (ii) Which sample shows pure aluminium, and what is the reason for the difference? (iv) Mention four uses of pure aluminium.

4) a) Explain what constructive and destructive interferences are and geometrically derive Braggs' Law. While doing this derivation give your reasoning and explain all your assumptions b) Explain what the major difference in the XRD patterns of base-centered and body-centered orthorhombic structures (see figure below) would be (a) (b) (a) Base-centered and (b) body-centered orthorhombic unit cells.

(no change) W1 n 2rn nk k1 %3D why k=nk, and lamda=lamda/n? show the step and detail please. ||

Constants I Periodic Table (Figure 1) shows a light wave incident on and passing through a thin soap film. Reflections from the front and back surfaces of the film create smaller waves (not shown in the figure) that travel to the left of the film, where they interfere. Part A What is the thickness of the film in terms of the light wavelength inside it? Express your answer as a multiple of wavelength to two significant figures. nν ΑΣφ ? d = Submit Request Answer Part B Figure 1 of 1 > Are the reflections from the film surfaces inverted or not? Reflection from the right surface of the film is inverted while reflection from the left surface of the film is not. Reflections from the both surfaces of the film are inverted. Soap film Reflection from the left surface of the film is inverted while reflection from the right surface of the film is not. Reflections from the both surfaces of the film are not inverted. Incident wave Submit Request Answer

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What's More Activity 1: Now you see me, now you don't Why are the skies blue? Why are sunsets red? Why are clouds white? You can answer these questions when you understand how light is scattered. This experiment will demonstrate the effect of scattering light. All you need here are 3 clear glasses of water, spoonful of sugar and milk and a laser pointer. If laser light is not available, you can use an ordinary flashlight. -600 Laser light A B C By A. Manzano-Own work Figure 14 What you need to do: 1. Prepare the materials and set it up like Figure 14. 2. Fill each glass with distilled water. 3. Turn on the laser pointer and observe the path of light as it passes through each glass. 4. Put a spoonful of sugar to the glass labelled B. Stir until all the sugar granules are dissolved completely. 5. Turn on the laser pointer and again observe the path of light as it passes through each glass. 6. Put two spoonsful of liquid milk to the glass labelled C. Stir until there is consistency in the…

1. What are the function of each component in Figure 3?2. What is the differences of Phosporescence and Flourosecence?3. Why the profile of emission spectra look like the reflection profile of absorption spectrum? How to answer above questions based on picture drawing!

Question A4 The mineral schreibersite is often found in iron-nickel meteorites. One sample was found to have a body-centred tetragonal structure with a = 9.0168 Å and c = 4.4491 Å. Calculate the scattering angle and the multiplicity for the first (lowest 0) diffraction peak, using Cu Ka radiation of wavelength X = 1.5406 Å.

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Write an equation giving the wavelength of a line as a function of the inverse of the grating pitch, the order of the line and the angular position of the line. How will you identify the gas from its visible line spectrum? Describe clearly the method you will use.

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