# What is the wavelength of a photon that has an energy of #4.41 x 10^-19#?

What unit of energy are you using? I assume it's J...? In which case its about 4.5 x

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To find the wavelength of a photon with a given energy, you can use the equation:

[E = \dfrac{hc}{\lambda}]

where:

- (E) is the energy of the photon,
- (h) is Planck's constant ((6.626 \times 10^{-34} , \text{J} \cdot \text{s})),
- (c) is the speed of light in a vacuum ((3.00 \times 10^8 , \text{m/s})),
- (\lambda) is the wavelength of the photon.

Rearranging the equation to solve for wavelength, you get:

[\lambda = \dfrac{hc}{E}]

Plugging in the values given:

[\lambda = \dfrac{(6.626 \times 10^{-34} , \text{J} \cdot \text{s}) \times (3.00 \times 10^8 , \text{m/s})}{4.41 \times 10^{-19} , \text{J}}]

Solving this equation will give you the wavelength of the photon.

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