# E=hv

E=energy

h= Planck's constant =6.626 x 10^-34

v= frequency

1. What is the energy of light having a frequency of 2.28 x 10^12? ( I do have an answer for this but I'm not so sure about it.)

2.What is the energy of light with a wavelength of 2.18 x 10^-5?

3. A photon of light has an energy of 1.93 x 10^-24 J . What is its frequency

4. Calculate the wavelength of light with a frequency of 2.00 x 10^6 Hz..

5. What is the frequency of light with an energy of 8.48 x 10^-16 J?

6. How much energy does the light with a frequency of 7.9 x 10^11 Hz have?

I'm terrible at Chemistry

## for 2) E=hv=h c/lambda

for 3) E=hv solve for v

for 4) f*lambda=speedlight solve for lambda

for 5) v=E/h

for 6) E=hv

This is not chemistry, it is math in chem.

## 1. To find the energy of light with a frequency of 2.28 x 10^12 Hz, you can use the formula E = hv, where E is energy, h is Planck's constant, and v is frequency.

Substituting the values, we get E = (6.626 x 10^-34 J·s) x (2.28 x 10^12 Hz).

Multiply the values: E = 1.511 x 10^-21 J.

2. To find the energy of light with a given wavelength, you need to convert the wavelength to frequency using the equation v = c/λ, where v is the frequency, c is the speed of light (approximately 3 x 10^8 m/s), and λ is the wavelength.

Substituting the values, we get v = (3 x 10^8 m/s) / (2.18 x 10^-5 m).

Divide the values: v ≈ 1.376 x 10^13 Hz.

Now you can use the formula E = hv, where h is Planck's constant.

Substituting the values, we get E = (6.626 x 10^-34 J·s) x (1.376 x 10^13 Hz).

Multiply the values: E ≈ 9.111 x 10^-21 J.

3. To find the frequency of a photon with a given energy, you can rearrange the equation E = hv to solve for frequency.

Divide both sides of the equation by h: v = E / h.

Substituting the values, we get v = (1.93 x 10^-24 J) / (6.626 x 10^-34 J·s).

Divide the values: v ≈ 2.92 x 10^9 Hz.

4. To calculate the wavelength of light with a given frequency, you can use the formula v = c/λ, where v is the frequency, c is the speed of light (approximately 3 x 10^8 m/s), and λ is the wavelength.

Rearrange the equation to solve for wavelength: λ = c / v.

Substituting the values, we get λ = (3 x 10^8 m/s) / (2 x 10^6 Hz).

Divide the values: λ = 1.5 x 10^2 m.

5. To find the frequency of light with a given energy, you can rearrange the equation E = hv to solve for frequency.

Divide both sides of the equation by h: v = E / h.

Substituting the values, we get v = (8.48 x 10^-16 J) / (6.626 x 10^-34 J·s).

Divide the values: v ≈ 1.28 x 10^18 Hz.

6. To find the energy of light with a given frequency, you can use the formula E = hv, where E is energy, h is Planck's constant, and v is frequency.

Substituting the values, we get E = (6.626 x 10^-34 J·s) x (7.9 x 10^11 Hz).

Multiply the values: E = 5.23 x 10^-21 J.

Note: In all calculations, it's important to maintain the correct significant figures based on the given values and associated uncertainties.

## No problem! I'll walk you through each question step by step. Remember, the equation E = hv relates energy (E) to frequency (v) and Planck's constant (h). To solve these questions, you can use this equation and perform the necessary calculations.

1. To find the energy of light with a frequency of 2.28 x 10^12, you can substitute the given frequency value into the equation E = hv. So, E = (6.626 x 10^-34) * (2.28 x 10^12). Multiply the values to get the answer in Joules (J).

2. To find the energy of light with a wavelength of 2.18 x 10^-5, you need to use the relationship between wavelength and frequency. The equation is v = c / λ, where v is the frequency, c is the speed of light (approximately 3 x 10^8 m/s), and λ is the wavelength. Rearrange the equation to solve for v. Once you have the frequency, you can use the equation E = hv to calculate the energy.

3. Given the energy of a photon as 1.93 x 10^-24 J, you need to find its frequency. Use the equation E = hv and rearrange it to solve for v. Divide the energy (E) by Planck's constant (h), and you'll get the frequency (v) in Hz.

4. To calculate the wavelength of light with a frequency of 2.00 x 10^6 Hz, use the relationship v = c / λ. Rearrange the equation to solve for λ. Divide the speed of light (c) by the frequency (v), and you'll get the wavelength (λ) in meters.

5. Given the energy of light as 8.48 x 10^-16 J, you need to find its frequency. Use the equation E = hv, and rearrange it to solve for v. Divide the energy (E) by Planck's constant (h), and you'll get the frequency (v) in Hz.

6. For the question about the energy of light with a frequency of 7.9 x 10^11 Hz, you can use the equation E = hv. Substitute the given frequency into the equation and multiply it by Planck's constant (h) to get the energy (E) in Joules (J).

Remember to always double-check your calculations and units to ensure the correct answers. Practice these steps, and you'll improve your chemistry skills over time!