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Darina [25.2K]
3 years ago
7

Identify the following atom​

Chemistry
1 answer:
bezimeni [28]3 years ago
8 0

Answer:

Explanation:

First count the protons. I think there are 10 of them. That pretty much locks it in. The atom must be Neon.

All the electrons are in the first 2 rings and there are 10 all together.

Neon

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A 251 ml sample of 0.45M HCl is added to 455 mL of distilled water. What is the molarity of the
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<u>We are given:</u>

251 mL sample of 0.45M HCl added to 455 mL distilled water

<u>Whack a mole! (finding the number of moles):</u>

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so, number of moles is:

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<u>Time to concentrate (finding the final concentration):</u>

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___________________________________________________________

<u>BONUS METHOD TIME!!!</u>

We know the relation:

M1 * V1 = M2 * V2

where M1 and M2 are the initial and final molarities and V1 and V2 are initial and final volumes respectively

notice that I didn't mention that the volume has to be in Liters, that's because of the units being concerned with both sides of the equation, say I have the volume in mL and want to convert both these volumes to L, I would divide both sides by 1000, which would NOT change the overall value

Now, plugging values in this equation

(0.45) * (251) = (251 + 455)* (M2)

112.95 = (706)(M2)

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