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olchik [2.2K]
2 years ago
13

What is the energy of one photon of red light that has a wavelength of 678 nm?

Chemistry
1 answer:
Vitek1552 [10]2 years ago
5 0

Answer:

E = 2.93×10⁻¹⁹ J

Explanation:

Given data:

Wavelength of photon = 678 nm   (678×10⁻⁹ m)

Energy of photon = ?

Solution:

Formula:

E = h c/λ

h = 6.63×10⁻³⁴ Js

c = 3×10⁸ m/s

E = 6.63×10⁻³⁴ Js × 3×10⁸ m/s / 678×10⁻⁹ m

E = 19.89 ×10⁻²⁶ Jm / 678×10⁻⁹ m

E = 0.0293×10⁻¹⁷ J

E = 2.93×10⁻¹⁹ J

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3 years ago
How many grams of As2S3 are in 3.25 moles?
laiz [17]

Answer:

Explanation:

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6 0
3 years ago
Draw a complete structural formula and a condensed structural formula for(a) three compounds of formula C3H8O (b) five compounds
Marat540 [252]

Answer:

Explanation:

A. Attached is a page which contain the structural formula of the three compounds of C3H80.

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Propan-2-ol: CH3CH(OH)CH3

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B. Attached are is a page which contain the structural formula of the three compounds of C3H60.

Condensed structural formula of C3H6O:

Propanal: CH3CH2CHO

Propanone: CH3COCH3

Cyclopropanol: (C3H5)OH

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1-propenol: CH3CHCHOH

4 0
3 years ago
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Bezzdna [24]

Answer:

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Explanation:

Yes

5 0
2 years ago
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