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pentagon [3]
4 years ago
14

URGENT PLEASE HELP!!!!!!!!!!!!!!!! 50 POINTS

Chemistry
2 answers:
kolezko [41]4 years ago
8 0
My calculus genius friend says he thinks it is b
navik [9.2K]4 years ago
8 0

B. momentum, velocity, speed & acceleration.

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A nitride ion has 7 protons, 8 neutrons, and 10 electrons. What is the overall charge on this ion?
xz_007 [3.2K]
The correct answer is: -3 (minus three)

Explanation:
To find the overall charge, we add electrons and protons. Make sure that you use the negative sign for an electron and positive sign for proton.

There are 10 electrons. It means the charge is "-10"
There are 7 protons. It means the charge is "+7"

Add both of them:

+7 - 10 = -3

Therefore the overall charge on this ion is -3.
7 0
3 years ago
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How can a hydrogen atom, which has only one electron, have so many spectral lines?
kow [346]

Answer:

The hydrogen atom has just one electron, but many spectral lines. However it contains many shells and the movement of that electron from one shell to another causes the release of energy and also an emission of photons.

A spectral line are dark or bright lines formed within a specific frequency range which differ from other frequencies.Because of the difference of energy for the various shells, it produces different wavelengths and this is the reason for the many spectral line for hydrogen.

6 0
3 years ago
Which of the following is a chemical property? freezing point color ability to react with oxygen hardness
Alenkasestr [34]
<span>Oxidation or reaction with oxygen is a chemical property</span>
4 0
3 years ago
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Where light is hitting an object
tiny-mole [99]
When lights hits an object, the light either get absorbed, reflected or refracted
3 0
3 years ago
What is the mass of 0.513 mol Al2O3? Give your answer to the correct number of significant figures. (Molar mass of Al2O3 = 102.0
prisoha [69]
.513mol x (102g/1mol)

Essentially, this is .513 x 102
Which equals: 52.326
But because you can only have 3 significant figures, your answer is:
52.3 grams

I hope this Helps!
7 0
3 years ago
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