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Alla [95]
4 years ago
14

An atom's tendency is to become stable. What does this mean? A. The electrons all move to one electron shell. B. The atom gains

or loses neutrons to match the number of protons. C. The atom gains or loses electrons to match the number of protons. D. The atom gains or loses electrons so its outer electron shell is full.
Chemistry
2 answers:
Vedmedyk [2.9K]4 years ago
7 0

The answer is D. I took the test and got it right


masya89 [10]4 years ago
3 0
The answer is D. To put it simply, all atom wished to become stable. The only way for that is to obtain an octet structure where the outermost shell would have 8 electrons, thus being full.
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Formed when an amine is combined with a carboxyl group
alekssr [168]
Hello.

The answer is C.Amine

When an amine is combined (reacted) with a carboxyl group, an AMIDE + water is formed, and if you carry on heating under a vacuum, an imidazoline is formed.


Have a nice day
7 0
3 years ago
List down the observations made by Rutherford during the gold foil experiment.
Travka [436]

Answer:

1) The volume occupied by an atom is composed of mainly empty space

2) Atoms have a very small, relatively dense, central nucleus that is positively charged

3) The region around the nucleus of an atom are orbited by negatively charged electrons in a the same fashion planets orbit around the Sun.

Explanation:

The selection of gold for the gold foil experiment was due to its ability to be rolled into extremely thin sheets such that it was expected for alpha particle to perforate or pass through the foil.

7 0
3 years ago
What is the relationship between relative size of an ion and its neutral atom and the charge on the ions?
Vsevolod [243]
<span>With the addition of an electron causing a negative charge, an ion is larger than normal but with loss of an atoms electron, the positive ion is smaller. if the atom loses an electron, the ion is relatively smaller than the atom and it becomes positive. if the atom gains an electron, the ion is relatively bigger than the atom and it becomes negative.</span>
6 0
3 years ago
How many protons are in the nucleus of this atom?<br> What is the mass number of this atom?
Anettt [7]
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3 0
3 years ago
What is the concentration of a solution that has a volume of 2.5L and contains exactly 2.125 moles of calcium phosphate
Iteru [2.4K]

Answer:

0.85 mol/L.

Explanation:

  • Molarity is defined as the no. of moles of solute dissolved in a liter of the solution.

<em>M = (no. of moles of solute)/(Volume of the solution (L))</em>

no. of moles of calcium phosphate = 2.125 mol.

Volume of the solution = 2.5 L.

<em>∴ M of calcium phosphate</em> = (2.125 mol)/(2.5 L) = <em>0.85 mol/L.</em>

7 0
3 years ago
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