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tensa zangetsu [6.8K]
3 years ago
5

A sample of a gas at room temperature occupies a volume of 18.0 L at a pressure of 902 torr . If the pressure changes to 4510 to

rr , with no change in the temperature or moles of gas, what is the new volume, V2
Chemistry
1 answer:
Paha777 [63]3 years ago
8 0

Answer:

The correct answer is 3.6 L

Explanation:

According to the gases Boyle's law, the relation between the volume and  the pressure of a gas at constant temperature is given by the following mathematical expression:

Pi x Vi = Pf x Vf

Where Pi and Vi are the <u>initial </u>pressure and volume of the gas whereas Pf and Vf are the <u>final</u> pressure and volume, respectively.

In this problem we have:

Vi = 18.0 L

Pi= 902 Torr

Pf= 4510 Torr

The final volume (Vf) will be:

Vf = (Pi x Vi)/Pf = (902 Torr x 18.0 L)/4510 Torr= 3.6 L

From the result, we can see that if the pressure increases, the volume of the gas decreases.

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Answer:

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Explanation:

When comparing two fractions with variables like this, it's important to get to the same denominator in order to compare apples with apples and then be able to do not only comparisons but also perform additions/subtractions.

Question is which denominator to use and how to reach it.

In this case, the question and the answer choices do the work for you.  The question asks which one is the LEAST common denominator, and the answers show denominators x² and 4x².  The smallest of these is x², however, we can't simplify the first fraction to get to the x² denominator, so we'll go for the 4x².

So, the first fraction has already the correct denominator (4x²), we just have to transform the second one.

We multiply it by 1, expressed in a different way.  Since we're multiplying by one, we're not affecting the value, just the way it looks.

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3 years ago
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Formula units are there in 212 grams of MgCl₂ are 830.56

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Here 212 grams×6.022×10²³form unit of MgCl₂/95.211 gram = 830.56

Know more about magnesium chloride

brainly.com/question/22727305

#SPJ1

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