MMSC407 EXAM 1 QUESTIONS AND CORRECT ANSWERS

MMSC407 EXAM 1 QUESTIONS AND
CORRECT ANSWERS
whatA2typeA2ofA2lightA2aA2TungsdenA2(Quartz-Vapor)A2exciterA2lampA2showsA2usA2-A2Ans--
visibleA2light

whatA2typeA2ofA2lightA2aA2Hydrogen/A2DeuteriumA2exciterA2lampA2showsA2usA2-A2Ans--
UVA2light

whatA2typeA2ofA2lightA2aA2Xenon/MercuryVaporA2exciterA2lampA2showsA2usA2-A2Ans--
UVA2light

visibleA2lightA2rangeA2-A2Ans--350-700A2nm

colorA2absorbedA2atA2350-430A2nmA2-A2Ans--violet

colorA2absorbedA2atA2430-475A2nmA2-A2Ans--blue

colorA2absorbedA2atA2475-495A2nmA2-A2Ans--blue-green

colorA2absorbedA2atA2495-505A2nmA2-A2Ans--green-blue

colorA2absorbedA2atA2505-555A2nmA2-A2Ans--green

colorA2absorbedA2atA2555-575A2nmA2-A2Ans--yellow-green

colorA2absorbedA2atA2575-600A2nmA2-A2Ans--yellow

colorA2absorbedA2atA2600-650A2nmA2-A2Ans--orange

colorA2absorbedA2atA2670-700A2nmA2-A2Ans--red

typeA2ofA2cuvettesA2thatA2canA2beA2usedA2forA2UVA2lightA2-A2Ans--QuartzA2orA2plastic

typeA2ofA2cuvettesA2thatA2canA2beA2usedA2forA2visibleA2lightA2-A2Ans--glassA2orA2plastic

whatA2aA2DidymiumA2FilterA2isA2usedA2forA2-A2Ans--
toA2calibrateA2theA2wavelengthA2ofA2aA2spectrophotometer

whatA2aA2HolmiumA2OxideA2FilterA2isA2usedA2forA2-A2Ans--
toA2calibrateA2theA2wavelengthA2ofA2aA2spectrophotometerA2atA2361A2andA2536A2nm

whatA2aA2NeutralA2DensityA2FilterA2isA2usedA2forA2-A2Ans--
absorbanceA2calibrationA2atA2340A2andA2550A2nm

, whatA2CobaltA2AmmoniumA2SulfateA2SolutionsA2areA2usedA2forA2-A2Ans--
absorbanceA2calibration

howA2manyA2mA2=A2nmA2-A2Ans--1A2nmA2=A210^-9A2m

lightA2energyA2formulaA2-A2Ans--EA2=A2hv

E:A2lightA2energyA2
h:A2Plank'sA2constantA2
v:A2frequency

Beer'sA2lawA2absorbanceA2formulaA2-A2Ans--A:A2absorbanceA2
E:A2molarA2absorptivityA2
b:A2pathA2lengthA2(1A2cm)A2
c:A2concentration

Beer'sA2lawA2%A2transmittanceA2formulaA2-A2Ans--T:A2transmittance

whatA2reflectionA2dependsA2uponA2-A2Ans--
compositionA2andA2physicalA2characteristicsA2ofA2theA2objectA2(e.g.A2smoothA2surfaceA2will
A2reflectA2moreA2lightA2thanA2roughA2surface)


aA2beamA2ofA2lightA2onA2anA2objectA2bouncesA2offA2-A2Ans--reflection

lightA2passesA2fromA2oneA2mediumA2intoA2anotherA2oneA2withA2aA2differentA2densityA2-
A2Ans--refraction


theA2redirectionA2ofA2radiationA2outA2ofA2theA2originalA2directionA2ofA2propagation,A2usually
A2dueA2toA2interactionA2withA2moleculesA2andA2particlesA2-A2Ans--scattering


3A2typesA2ofA2lightA2scatteringA2-A2Ans--reflection,A2refraction,A2andA2diffraction

theA2slightA2bendingA2ofA2lightA2asA2itA2passesA2aroundA2theA2edgeA2ofA2anA2objectA2-
A2Ans--diffraction


whatA2diffractionA2dependsA2onA2-A2Ans--
theA2relativeA2sizeA2ofA2theA2wavelengthA2ofA2lightA2comparedA2toA2theA2sizeA2ofA2theA2ope
ning

whatA2isA2measuredA2inA2nephlometryA2-A2Ans--intensityA2ofA2scatteredA2light

whatA2isA2measuredA2inA2turbidimetryA2-A2Ans--intensityA2ofA2transmittedA2light

isA2nephlometryA2orA2turbidimetryA2moreA2sensitiveA2-A2Ans--nephelometry