Chemistry 4011/5011
Problem Set 3
Due: September 27, 2010
1. Construct the molecular orbital diagram for ammonia in point group C3v.
Begin by forming the reducible representation describing the N-H bonds.
Simplify the RR to determine the atomic orbitals o
1.
Calculatethefrequency,energyinjoules,andenergyin eVofanXrayphotonwithawavelengthof
6.24.
=5.0x1017s1
E=3.19x1016J=2.0x103eV
2. When the D line of sodium light impinges an airdiamond interface at an angle of incidence of 30.0
degrees,theangleofrefracNon
Chemistry 4011/5011
Problem Set 1
Due: Sept 9, 2011
1. Show that the set of numbers [ 1, -1, i, -i ] constitute a group (i= (-1)1/2).
What is the group multiplication operation? What is the reciprocal of each
element? Is the group Abelian? What subgroups
HW 8 Key
1. Use the following mass spectrometry data and blank to construct a calibration curve with
trend line:
CH4 (vol%): 0
Signal (mV): 9.1
0.062 0.122 0.245 0.486 0.971 1.921
47.5 95.6 193.8 387.5 812.5 1671.9
Blank correcting the signal means subtra
HW7:MassSpectrometry
1. What is secondary ion mass spectrometry and what type of informa:on does it
provide?
2. WhattypesofinterferencesareencounteredinatomicMS?
3. ListthegeneralstepsinaMSexperiment?
4. WhatismeantbysoGioniza:onandhowisitachievedinMS?
5.
Op#calInstrumentsHomework
1. Use the Wein displacement law to calculate the wavelength emi=ed by a
blackbodythathasbeenheatedto5000K.
2. Use Stefans law to calculate the total energy output in W/m2 for the
blackbodyradiatorinQ1.
3. How many lines per mill
HW#2
DueFriday9/2/11
(1)Thecarbohydratecontentofaglycoproteinisdeterminedtobe12.6,11.9,
13.0, 12.7, and 12.5 g of carbohydrate per 100 g of protein in replicate
analyses.Findthe50%and90%condenceintervals()forthecarbohydrate
content. Write out in words wha