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bija089 [108]
3 years ago
13

C

Chemistry
2 answers:
Basile [38]3 years ago
6 0
I just need to answer
PolarNik [594]3 years ago
5 0

Answer:

Gravity

because the earth which pulls any object towards it center and the velocity is achieved

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Group 1a elements (the first column on the left side of the Periodic table) always release one electron to form positive ions with a charge of +1. Group 7a nonmetals (the <em>second to the last </em>column on the right side- the rightmost column are the noble gases) always desire to gain one electron to form negative ions with a charge of -1.
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How does the number of molecules in 1 mol of oxigen compare with the number of molecules in 1 mol of nitrogen?
swat32

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They are the same.

Explanation:

Hello!

In this case, according to the Avogadro's number, we take into account that for molecules such as gaseous oxygen (O₂) and nitrogen (N₂), we realize that 1 mole of these contain 6.022x10²³ moles of molecules; as we are given  1 mol each, we notice they both have 6.022x10²³ molecules, therefore, they number of molecules is the same because they have the same number of moles.

Best regards!

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