Light emitting diodes work by creating an electrical circuit where electrons fallacross a “band gap" (i.e. they go from a high energy state to a low energystate). The larger the gap, the more energy they emit when they fall. Thisenergy is emitted as a photon (i.e. a particle of light). The color of lightgenerated by the LED is directly related to the size of the band gap. A largeenergy change results in blue light and small energy changes results in redlight.Because LEDS made of pure elements can only emit light that is too high ortoo low in energy for us to see, mixtures of elements must be used to create aband gap that results in visible light. The table below summarizes thecomposition and properties of three different elemental combinations used inLEDS.Table 1: Composition and Properties of LEDSElement 1Element 2Size of Band GapLED ColorGalliumNitrogenLargeBlueGalliumPhosphorousMediumGreenGalliumArsenicSmallRed Question 3Based on the figure above, what is the relationship between the ionizationenergy of Element 2 and the size of the band gap? Explain why this might be.Be sure to use the coulombic attraction between electrons and the nucleus inyour explanation.EditViewInsertFormat ToolsTable12pt vParagraph vBIUAO words</> ?::::

Introduction Band Gap or Band energy refers to the energy difference between the top of the valence…

Answered: Based on the figure above, what is the…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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pnc.com/women ail - Whisenant, Kayla M -( x V My Submissions - Events - En x O Grades for Kayla Whisenant: x Course Home com/course.html?courseld=D16985674&OpenVellumHMAC=3dce33f6083287adf8a765659732407c#10001 I Review | Constants | Periodic Table You may want to reference (Pages 235 - 239) Section 5.10 while completing this problem. Part A Water alone does not easily remove grease from dishes or hands because grease is nonpolar and water is polar. The addition of soap to water, however, allows the grease to dissolve. Study the structure of sodium stearate (a soap) and describe how its structure allows it to interact with both nonpolar grease and polar water. CH3(CH2)16C-0 Na* Drag the terms on the left to the appropriate blanks on the right to complete the sentences. P Pearson rights reserved. I Terms of Use | Privacy Policy | Permissions I Contact Us I
Each of the following molecules has a unique 'H NMR spectrum. CI molecule A molecule B molecule C molecule D molecule E molecule F molecule G molecule H
*finish the equation problem* my patients order is written in apothecaries unit dose. The package says aspirin 325 mg. I need to figure out how many tablets I need to administer In apothecaries It indicates that its 10 grains of aspirin I know 1 grain is equivalent to approximately 65 mg so all I have to do is solve the problem 65mg 1 grain set up the second fraction with the unknown quantity in the approximate position X1 grain put the fractions into a proportion 65 mg X 1 grain = 10 grains cross multiply 65mg * 10 grains = X *-1 grain Solve for X by dividing sides of the equation by 1 grain and canceling units
The standard curve provided below will allow you to answer the remaining questions. Generic Standard Curve 0.7 y = 0.9425x- 0.0034 0.6 0.5 0.4 0.3 02 0.1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Concentration (mg/ml) - Please describe two ways in which you could use this standard curve to determine the concentration of a pigment in an unknown sample.| #1: #2: -What is your rough estimation of the concentration if you determine the absorbance of a sample is 0.150? Absorbance
Consider an electron transition from n = 3 to the n= 2 energy level in a hydrogen atom resulting in a spectral line. a. What would the colour of this line be? b. Calculate the wavelength (nm) of the hydrogen spectral line observed. AC c. Calculate the energy of the transition. NB. Use an attached PDF sheet for relevant information FORMAL QUIZZ 1-SHEET.pdf 400 KB A. 3. 3,028 x 10] b. 656 nm C Ted B. a. 3,028 x 10 b. 656 nm C orange a 3,028 x 10 b. 656 nm Corange 2.028
Milligrams 47.0 milligrams = Multiple Choice 0.47 decigrams 4.7 centigrams 0.047 grams 0.00047 hectograms All of the answer choices are correct.
File Edit View History Bookmarks Profiles Tab Window Help he X Rev X locx Bev X acconline.austincc.edu/ultra/courses/_891351_1/cl/outline QUESTION 4 A Blac X MAT X W Biol 1406 - LA....docx A JUN 3 Choose all of the true statements below. Hint: 5 statements are true. O Red wavelengths have longer wavelengths and thus lower energy. O When an electron absorbs a photon, it goes from a ground state to an excited state. O Chlorophyll absorbs green light giving plants their green appearance. In photosynthesis, H₂O is reduced and CO2 is oxidized. 24 MAT X Click Save and Submit to save and submit. Click Save All Answers to save all answers. Blac X Blac 83 N. SOL X CollegeScores2y....csv ^ Writ Wri X O Excited electrons move to higher energy orbitals and release energy as they fall back to their ground.state. The Calvin Cycle must turn 2 times to build up one molecule of glucose. The three major stages of the calvin cycle include: carbon fixation, reducation, and regeneration of the CO2 acceptor…
Calculate the standard Gibbs energy of formation of H,O(g) at 25 °C. Method Write the chemical equation for the formation reaction, and then the expression for the standard Gibbs energy of formation in terms of the Gibbs energy of each molecule; then express those Gibbs energies in terms of the molecular partition function of each species. Ignore molec- ular vibration as it is unlikely to be excited at 25 °C. Take numerical values from the Resource section together with the following rotational constants of H,O: 27.877, 14.512, and 9.285 cm-1, Take for the atomization energy of H,O the value -237 kJ mol-'.
Find the approximate radiation dose (in mSv) for 0.1 Gy exposure to thermal neutrons. (Hint: relative biological effectiveness for various types of radiation can be found in Table 32.2 in the text.) A range of answers is acceptable.
What are the predominant Intermolecular forces (Dipole-dipole, London dispersion, Hydrogen bonding etc) for the following molecules: TeCl6 AsBr5 XeF4 SiCl4
You are a graduate student who is trying to conduct an experiment. For this experiment, you need to create a 500 micromolar solution of Solution X. You have a stock solution of Solution X 500 millimolars. Your final volume needs to be 10 milliliters. How much of the stock solution do you need to add and how much water needs to be added in order to create a 50 micromolar solution of Solution X? O 1,000 microliters of X and 9 milliliters of water O 1 microliters of X and 9.999 milliliters of water 0.01 microliters of X and 9.99 milliliters of water 10 microliters of X and 9.99 milliliters of water
Answer questions in the table below about the shape of the hydrogen cyanide (HCN) molecule. How many electron groups are around the central carbon atom? Note: one "electron group" means one lone pair, one single bond, What phrase best describes the arrangement of these electron groups arou the central carbon atom? (You may need to use the scrollbar to see all the choices.) (choose one) Explanation Check O 2022 McGraw Hill LLC. All Rights R

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