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Vladimir [108]
3 years ago
15

Single covalent bond is preset in ---- •NH3 •NaCl •KCl •MgCl2 •Other:___​

Chemistry
1 answer:
wariber [46]3 years ago
3 0

Answer:

\:  \:  \:

•NH3(~ ̄³ ̄)~

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The measure of the number of atoms in one element that will combine with an atom of another element is
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The correct answer is:

C. valence.

Explanation:

The valence or valency of an element is a stratagem of its connecting power with other atoms when it makes chemical compounds or molecules.

A valence electron is an outer shell electron that is connected with an atom, and that can compete in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond provide one valence electron in order to form a shared pair

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What would be an example of a chemical change that took a long time to occur?
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<span>rusting takes a long time, and rusting is a chemical change.</span>
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4 years ago
Which statement is true about oxygen and rocks?
mafiozo [28]
<span>oxygen is a mixture and a rock is a pure substance.</span>
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4 years ago
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Why does argon exist in nature as individual argon atoms and chlorine exist in nature as 2 chlorine atoms covalently bonded toge
Katarina [22]

Answer:

Argon has 8 valence electrons and no extras, it does not require a bond in order to fill its shells, its satisfied by itself.

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8 0
3 years ago
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) =?

E = hf

E = 6.63×10¯³⁴ × 6.42×10¹⁴

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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