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1) What is the wavelength of light (in nm) if the frequency is 9.8 x 10^14 (1/se

ID: 1006225 • Letter: 1

Question

1) What is the wavelength of light (in nm) if the frequency is 9.8 x 10^14 (1/sec)?

2) What is the wavelength of light (in nm) if the energy of the wave is 2.40 x 10^-19 J?

3) What is the final concentration of a solution if 199-mL of a 4.6-M solution was diluted to 433-mL?

4) What is the final concentration of a solution if 15-mL of a 3.0-M solution was diluted to 100-mL and this process was repeated two more times?

0.6 0.5 0.4 0.3 0.2 0.1 0.2 Absorption vs. Concentration 0.6 0.4 Concentration (M) 0.8 1.2

Explanation / Answer

1.Wavelength=speed of light÷frequency=(3×10^8)÷(9.8×10^14)

=3×10-7 m

2. Wavelength=(6.626×10-34×3×10^8)÷(2.4×10^-19)

3. New concentration=(199×4.6)÷433