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Charra [1.4K]
3 years ago
8

A: 10 B: 4 C: -4 D: 11

Chemistry
1 answer:
s2008m [1.1K]3 years ago
4 0

Answer:i think its

b

Explanation:

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What does the atomic weight (mass number) of an element represent? ____________________________ .
Lyrx [107]

Answer:

The atomic weight of an element represents the ratio of the average mass of atoms of a chemical element.

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2 years ago
Please help!
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What is the approximate energy of a photon having a frequency of 4 x 10^7 Hz? (h = 6.6 x 10^-34 J . s)
BigorU [14]

Answer:

2.64 ×10^{-26} J

Explanation:

I think you should mark it a physics question instead but anyway.

---------------------------------------------------------------------------

The Planck equation should be applied:

E = hv , while E is energy of proton; h is Planck constant; and v is frequency.

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6 0
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