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Brums [2.3K]
4 years ago
9

qizlet, The concentration of a diluted "wine" sample was found to be 0.32 %(v/v) ethanol. Assuming the wine was diluted by 50x b

efore analysis, what was the original concentration of ethanol in the "wine"? Enter your answer with 2 significant figures.
Physics
1 answer:
Semmy [17]4 years ago
6 0

Answer:

The original concentration of ethanol is 16%(v/v)

Explanation:

concentration before dilution, C1 = ?

Concentration after dilution,    C2 = 0.32% (v/v)

Volume before dilution,            V1 = x

Volume after dilution,                V2 = 50x

From the dilution principle

C1V1 = C2V2

(C1) * x = (0.32) * 50x

C1 = (16x)/x

C1 = 16%(v/v)

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I would think A

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Answer:

-8.0 \times 10 ^{-19 }\ C,\ -3.2 \times 10 ^{-19 }\ C, -4.8 \times 10 ^{-19 }\ C

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Since Robert Millikan determined the charge of a single electron is

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Let's test the possible charges listed in the question:

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-3.2 \times 10 ^{-19 }. Since 3.2 is an exact multiple of 1.6, this is also a possible charge of the oil droplets

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-5.6 \times 10 ^{-19 },\ -9.4 \times 10 ^{-19 } cannot be a possible charge for an oil droplet because they are not exact multiples of 1.6

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Summarizing, the following are the possible values for the charge of an oil droplet:

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3 years ago
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All matter is made up of subatomic particles that contain atoms. This is false statement.

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All matter is made up of substances called elements, which have specific chemical and physical properties and cannot be broken down into other substances through ordinary chemical reactions.

Matter is anything which have mass and occupy some volume.

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The magnitude of the tangent or linear velocity is computed as the ratio between the arc length and the time taken to travel that distance:

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Replacing the formula for w, we have

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