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dusya [7]
3 years ago
11

A(n) _____ refers to two or more atoms held together by covalent bonds.

Chemistry
1 answer:
arlik [135]3 years ago
7 0

Answer: Option (d) is the correct answer.

Explanation:

A covalent bond is defined as the bond formed by sharing of electrons between the two chemically combining atoms.

For example, atomic number of chlorine is 17 and it has 7 valence electrons.

To attain stability it need to gain one more electron.

So, when one chlorine atom chemically combines with another chlorine atom then there occurs sharing of electrons between the two. As a result, there will be sharing of electrons.

A molecule is defined as the specie that contains same type of atoms which are chemically combined together in a fixed ratio by mass.

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3 0
3 years ago
A hot air balloon is filled to 1250 m3 at 27 C. At what temperature will the balloon be filled to 1600 m3 if the pressure remain
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Answer:

384.2 K

Explanation:

First we convert 27 °C to K:

  • 27 °C + 273.16 = 300.16 K

With the absolute temperature we can use <em>Charles' law </em>to solve this problem. This law states that at constant pressure:

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We input the data:

300.16 K * 1600 m³ = T₂ * 1250 m³

And solve for T₂:

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