-What is the wavelength of a 2.28 x 1017 Hz wave?
1 answer:
I attached the working and the answer to both questions below.
Please note that C = speed of light, ν = frequency, λ= wavelength
<span>The wavelength of a 2.28 x 10</span>¹⁷<span> Hz wave is 1.31 </span>×<span> 10</span>⁷ cm<span>
The frequency of a 7.30 x 10</span>⁻⁵<span> m wave 4.11 </span>×<span> 10</span>¹² s⁻¹
Please note that C = speed of light, ν = frequency, λ= wavelength
<span>The wavelength of a 2.28 x 10</span>¹⁷<span> Hz wave is 1.31 </span>×<span> 10</span>⁷ cm<span>
The frequency of a 7.30 x 10</span>⁻⁵<span> m wave 4.11 </span>×<span> 10</span>¹² s⁻¹
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Answer:
The analytical concentrations of thiocyanate ions:
The analytical concentrations of ferric ions:
Explanation:
1) Moles of sodium thiocyanate = n
Volume of sodium thiocyanate solution = 5.00 mL = 0.005 L
(1 mL = 0.001L)
Molarity of the sodium thiocyanate =
1 mole of sodium thiocyanate has 1 mol of thiocyante ions.
So, moles of thioscyanate ions in of NaSCN.
2) Moles of ferric nitrate = n'
Volume of ferric nitrate solution = 2.00 mL = 0.002 L
Molarity of the ferric nitrate = 0.21 M
1 mole of ferric nitrate has 3 moles of ferric ions.
So number of moles of ferric ions in 0.00042 moles of ferric nitrate is :
Volume of nitric acid = 13.00 mL
Total volume by adding all three volumes of solutions = V
V = 5.00 mL + 2.00 mL + 13.00 mL = 20.00 mL = 0.020 L
The analytical concentrations of thiocyanate ions:
The analytical concentrations of ferric ions: