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3 years ago

What is the energy of a photon that emits a light of frequency 6.42 x 1014 Hz?

Chemistry

2 answers:

Dmitrij [34]3 years ago

8 0

Answer:

B. 4.25 x 10-19J is correct via a p e x

Explanation:

svetlana [45]3 years ago

3 0

Answer:

Option B. 4.25×10¯¹⁹ J

Explanation:

From the question given above, the following data were obtained:

Frequency (f) = 6.42×10¹⁴ Hz

Energy (E) =?

Energy and frequency are related by the following equation:

Energy (E) = Planck's constant (h) × frequency (f)

E = hf

With the above formula, we can obtain the energy of the photon as follow:

Frequency (f) = 6.42×10¹⁴ Hz

Planck's constant (h) = 6.63×10¯³⁴ Js

Energy (E) =?

E = hf

E = 6.63×10¯³⁴ × 6.42×10¹⁴

E = 4.25×10¯¹⁹ J

Thus, the energy of the photon is 4.25×10¯¹⁹ J

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2 years ago

An Argon laser gives off pulses of green light (wavelength = 514 nm). If a single pulse from the laser has a total energy of 10.

svetoff [14.1K]

Answer:

$n=2.59\times 10^{16}$ photons

Explanation:

$E=n\times \frac{h\times c}{\lambda}$

Where,

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Given that, wavelength = 514 nm = $514\times 10^{-9}\ m$

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$0.01=n\times \frac{6.626\times 10^{-34}\times 3\times 10^8}{514\times 10^{-9}}$

$\frac{19.878n}{10^{17}\times \:514}=0.01$

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2 years ago

A certain sample of a liquid has a mass of 42 grams and a volume of 35 centimeters3. What is the density of the liquid?

BabaBlast [244]

Answer:

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Solution:

Data Given:

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Formula Used:

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3 years ago

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2 years ago

What is the energy of a photon that emits a light of frequency 6.42 x 1014 Hz?​

What is the energy of a photon that emits a light of frequency 6.42 x 1014 Hz?