Chosen wavelength : 400 EDTA Volume (ml.) Absorbance O ml. 0.445 I ml. 0.439 2 ml. 0.434 3 ml. 0.428 4 ml. 0.388 5 ml. 0.352 6 ml. 0.351 7 ml. 0.320 8 ml. 0.289 9 ml. 0.275 10 ml. 0.263 I1 ml. 0.256 1.Explain why the selected wavelength was chosen for inspection of the titration. 2. Draw the titration curve of the titration.

How much energy is associated with an infrared photon with a wavelength of 6.73 μm?   __ x 10 __ J

Calculate the frequency of a photon with energy of 5.38 x 1017 J. Select the correct answer: Oa. 8.12 x 104 Hz b. 8.12 x 1016 THz Oc. 3.56 x 10-62 THz Od. 8.12 x 104 THz Oe. 3.69 x 10-9 Hz

When a red light with a wavelength of 670 nm shines on a piece of metal, an electron is ejected. What is the energy of the photon absorbed by the electron to overcome the attractive forces? 4.7 x 10-35 J -37 4.3 x 10³ J 3.3 x 10-¹⁹ 19 3.0 x 10-¹⁹ J 2.9 x 10-³7 J Below is an emission spectrum with two specific lines labelled 1(orange) and 2 (green). red A Which energy level diagram best represents the labelled electronic transitions? 1 2 1 B 1 2 1 C 2 2 D 1 2 violet O A

What is the wavelength in nm of 7.47*10-19

Which color is closest to a wavelength of 5.0x10^-7 meter in air? Wavelength in a vacuum (m) 10-13 10-12 10 11 10 10 10 10 10 10 10 10 10³ 10² 10¹ 10⁰ 10¹ a C d Gamma Rays b violet e green E infrared orange red -X rays Ultraviolet Infrared 1021 1020 1019 108 107 106 105 10¹4 103 102 10¹ 101⁰ Frequency (Hz) Microwaves Visible Light (not to scale) Violet | Blue | Green | Yellow | Orange Red 10⁰ FM 10² 10³ 104 Radio Waves AM +Long Radio Waves -- 108 107 105 105

The frequency range of infrared light used in an IR spectrometer is 1.2x1014 Hz to 1.2x1013 Hz. What is the wavelength range (in nm) used in this spectrometer

. Note the display shows wavelength and color.  Record these and CALCULATE frequency using the wave equation   Voltage = 0, Target = Sodium             Current     Wavelength nm Color Intensity 20%   Intensity 100%   Calculated frequency from wavelength X1014 Hz 750  Burgundy 0    0     600  Orange 0   0     500  Green 0    0     400  Purple  0.029    0.141     300  Gray 0.112    0.549     250  Gray  0.197    0.964     200  Gray  0.346    1.695