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velikii [3]
2 years ago
7

Help meee!! this is really confusing my brain

Chemistry
1 answer:
Natasha_Volkova [10]2 years ago
6 0

Answer:

I believe it's (3)

Explanation:

same number of proton and electrons in both atoms A and atom B. but different number of neutron

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How is the food in a stomach broken down into simpler substances? What chemicals help this process?
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What is the mass, in grams, of a sample of 6.98 × 1024 atoms of magnesium (Mg)?
monitta
N=6.98*10²⁴
Nₐ=6.022*10²³ mol⁻¹

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What is the study of his matter and energy interact? A. Chemistry B. Physics C. Biology D. Planetary science
e-lub [12.9K]

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8 0
3 years ago
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What is the energy of a photon that emits a light of frequency 6.42 x 1014 Hz?<br><br>​
svetlana [45]

Answer:

Option B. 4.25×10¯¹⁹ J

Explanation:

From the question given above, the following data were obtained:

Frequency (f) = 6.42×10¹⁴ Hz

Energy (E) =?

Energy and frequency are related by the following equation:

Energy (E) = Planck's constant (h) × frequency (f)

E = hf

With the above formula, we can obtain the energy of the photon as follow:

Frequency (f) = 6.42×10¹⁴ Hz

Planck's constant (h) = 6.63×10¯³⁴ Js

Energy (E) =?

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E = 4.25×10¯¹⁹ J

Thus, the energy of the photon is 4.25×10¯¹⁹ J

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3 years ago
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