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3 years ago

What is the energy of a photon of yellow light with a frequency of 5.2 x 10¹⁴ Hz?

Chemistry

1 answer:

3241004551 [841]3 years ago

4 0

Answer:

3.4x10⁻¹⁹J is the energy of the photon

Explanation:

To find the energy of a photon from its frequency we must use the equation:

E = hf

Where E is the energy of the photon in J, our incognite

h is Planck's constant = 6.6262x10⁻³⁴Js

And f is the frequency = 5.2x10¹⁴Hz = 5.2x10¹⁴s⁻¹

Replacing:

E = 6.6262x10⁻³⁴Js*5.2x10¹⁴s⁻¹

E = 3.4x10⁻¹⁹J is the energy of the photon

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miss Akunina [59]

Answer:

It shows the change in concentration of a reactant or product per unit of time, expressed as mol/(L · s)

Explanation:

The reaction rate is the speed at which a chemical reaction proceeds.

So if the reaction rate is the speed at which a chemical reaction happens/occurs, then the reaction rate will tell us about the concertation of the chemicals. It shows the change in concentration of a reactant or product per unit of time, expressed as mol/(L · s)

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3 years ago

Ferris & Mona used the ORP sensor to titrate a ferrous ammonium sulfate solution, (NH4)2Fe(SO4)2 with KMnO4 titrant.

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Answer:

The correct option is: A. 0.168 M

Explanation:

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Number of moles: n₁ = 1, Volume: V₁ = 20.2 mL, Concentration: M₁ = 0.0250 M;

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To find out the concentration of Fe²⁺ solution (M₂), we use the equation:

$\frac{M_{1}\times V_{1}}{n_{1}} = \frac{M_{2}\times V_{2}}{n_{2}}$

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4 years ago

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As 1 mol of H⁺ reacts with 1 mol of OH⁻, in the 25.0 mL of the Ca(OH)₂ sample there are 1.0817 mmoles of OH⁻.

With that in mind we can calculate the hydroxide ion concentration in the original sample solution, using the calculated number of moles and given volume:

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3 years ago

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3 years ago

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2 years ago

What is the energy of a photon of yellow light with a frequency of 5.2 x 10¹⁴ Hz?​

What is the energy of a photon of yellow light with a frequency of 5.2 x 10¹⁴ Hz?