Chap%201and2%20HW

Chap%201and2%20HW - Problem 1-1 The Beer-Lambert Law...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Problem 1-1 The Beer-Lambert Law describes the transmittance of light ( T ) as a function of extinction coefficient ( ε ), path length ( b ), and concentration of molecules ( c ). T = e bc The extinction coefficient is directly related to light absorbance ( A ) and is an intrinsic property of that compound. The Beer-Lambert Law may also be written as A = ε bc The table below give the extinction coefficients for ozone as a function of wavelength in the UV-B region of the spectrum. ε (cm - 1 ) λ (nm) 100 280 32 290 10 300 3 310 0.8 320 a. From the table, calculate the percent UV-B light transmitted to ground level as a function of wavelength. Note that T=1.0 is equivalent to 100% transmittance. [Hint: Assume bc = 0.35 cm the average thickness of pure ozone at ground level and equivalent to 350 DU overhead ozone.] b. If the concentration of ozone were decreased by 1%, how would transmittance of UV-B vary at each wavelength shown in the table? Problem 1-2
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/29/2010 for the course ECON 100A taught by Professor Smith during the Spring '08 term at Alabama.

Page1 / 2

Chap%201and2%20HW - Problem 1-1 The Beer-Lambert Law...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online