Topic 1 chm261

What is Electromagnetic Radiation?

It is a form of energy that

• Has particle properties

• Has wave

• Has both wave and particle properties

Convert 0.375 absorbance into percent transmittance

Draw Beer’s Law graph

What is wavenumber?

• Number of waves per cm

• Distance between two identical adjacent points in a wave

• Number of cycles which pass a fixed point in space per second

What is the number of Planck’s constant?

• 6.63 x 10^-34 Js

• 6.634 x 10^-40Js

• 6.634 x 10^-39 Js

• 6.63 x 10^-37 Js

What is the wavelength range for UV?

• 0.01-10 nm

• 700nm - 1mm

• 1mm - 1m

• 10-380 nm

What is emission?

A plot of relative power of the emitted radiation as a function of wavelength or frequency.

From the definition above, what type of spectra it is?