CHM 151 Quiz 2 (20 points) Name ______________________________ 1) (2) How many times does the earth orbit the sun every year? 2) (8) In the boxes provided, write Lewis electron-dot symbols for each of the following elements: Carbon Silicon Argon Calcium 3) (10) A metallic sample is known to be barium, cesium, lithium, or silver. The electron binding energies for these metals are listed below. Metal Electron Binding Energy (J) Barium 4.30 x 10-19 Cesium 3.11 x 10-19 Lithium 3.94 x 10-19 Silver 7.59 x 10-19 One way to identify the element might be through a photoelectric effect experiment where the unknown metal sample is bombarded with the energy of lasers whose wavelengths are 532 nm, 488 nm, and 308 nm. The results of that experiment are shown below: Laser Wavelength Photoelectric Effect Observed? 532 nm No 488 nm Yes 308 nm Yes Based on this information, what conclusion can you draw about the identity of the metal? Complete your work on a separate sheet (or on the back of this one), turn in all of your work, and explain (that means write about) your work as you present it. https://www.coursehero.com/file/13212196/CHM-151-Quiz-2-Fall-2012pdf/ This study resource was shared via CourseHero.com Powered by TCPDF (www.tcpdf.org)

AccountingQueen

(3)

Status NEW Posted 05 Sep 2017 04:09 PM My Price 8.00

Hel-----------lo -----------Sir-----------/Ma-----------dam----------- T-----------han-----------k y-----------ou -----------for----------- us-----------ing----------- ou-----------r w-----------ebs-----------ite----------- an-----------d a-----------cqu-----------isi-----------tio-----------n o-----------f m-----------y p-----------ost-----------ed -----------sol-----------uti-----------on.----------- Pl-----------eas-----------e p-----------ing----------- me----------- on----------- ch-----------at -----------I a-----------m o-----------nli-----------ne -----------or -----------inb-----------ox -----------me -----------a m-----------ess-----------age----------- I -----------wil-----------l

Not Rated(0)

• Buy Answer