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AnnyKZ [126]
3 years ago
10

20points

Chemistry
2 answers:
tangare [24]3 years ago
8 0

Answer: Boyle’s law

Explanation: Boyle's law gives a relationship between volume and pressure

P1V1 = P2V2

maria [59]3 years ago
4 0

Answer:

boyles law

Explanation:

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18.22874999999973

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How many molecules are in 7.62 L of CH4, at 87.5°C and 722 torr
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Explanation:

Given : Volume = 7.62 L

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Converting torr into atm as follows.

722 torr = 722 torr \times \frac{0.00131579 atm}{1 torr}\\= 0.95 atm

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Substitute the values into above formula as follows.

PV = nRT\\0.95 atm \times 7.62 L = n \times 0.0821 L atm/mol K \times 360.5 K\\n = \frac{0.95 atm \times 7.62 L}{0.0821 L atm/mol K \times 360.5 K}\\= \frac{7.239}{29.59705}\\= 0.244 mol

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0.244 mol \times 6.022 \times 10^{23}\\= 1.469 \times 10^{23}

Thus, we can conclude that there are 1.469 \times 10^{23} molecules present in 7.62 L of CH_4 at 87.5^{o}C and 722 torr.

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