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e-lub [12.9K]
3 years ago
14

How much energy does a 930 nm wave of light have? (The speed of light in a

Chemistry
1 answer:
Orlov [11]3 years ago
4 0

Answer:

E=2.14\times 10^{-19}\ J

Explanation:

We have,

Wavelength of a light is 930 nm

It is required to find the energy of a wave of light. The energy of a wave is given in terms of following as :

E=\dfrac{hc}{\lambda}\\\\E=\dfrac{6.626\times 10^{-34}\times 3\times 10^8}{930\times 10^{-9}}\\\\E=2.14\times 10^{-19}\ J

So, the energy of the wave is 2.14\times 10^{-19}\ J

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2 years ago
An analysis of a sugar compound is found to contain 132 grams of carbon (C), 22 grams of hydrogen (H), and 176 grams of oxygen (
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132 g of C  ,   22 g of H   , 176 g of O

132 + 22 + 176 => 330 g <span>of the substance

</span>Now convert the masses in <span>moles :
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O = 176 / 16.0 => 11 moles

Using the values obtained the lowest proportion in mols of elements present, simply divide the values found for the least of them<span>:
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C = 11 / 11 => 1

H = 22 / 11 => 2

O = 11 / 11 => 1

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hope this helps!


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