a 295 mL flask contains pure helium at a pressure of 754 torr. A second flask wi

Question

a 295 mL flask contains pure helium at a pressure of 754 torr. A second flask with a volume of 490 mL contains argon at a pressure of 731 torr.
A. If two flasks are connected through a stopcock is opened, what is the partial pressure of helium?
B. If two flasks are connected through a stopcock is opened, what is the partial pressure of argon?
C. If two flasks are connected through a stopcock is opened, what is the total pressure? a 295 mL flask contains pure helium at a pressure of 754 torr. A second flask with a volume of 490 mL contains argon at a pressure of 731 torr.
A. If two flasks are connected through a stopcock is opened, what is the partial pressure of helium?
B. If two flasks are connected through a stopcock is opened, what is the partial pressure of argon?
C. If two flasks are connected through a stopcock is opened, what is the total pressure? a 295 mL flask contains pure helium at a pressure of 754 torr. A second flask with a volume of 490 mL contains argon at a pressure of 731 torr.
A. If two flasks are connected through a stopcock is opened, what is the partial pressure of helium?
B. If two flasks are connected through a stopcock is opened, what is the partial pressure of argon?
C. If two flasks are connected through a stopcock is opened, what is the total pressure?

Explanation / Answer

total volume : 490ml + 295ml = 785ml

P1V1 = P2V2

For He: 754 X 490 = P2 X 785

754torr(295ml/785ml) = 283 torr for He

Similarly 731torr(490ml/785ml) = 456 torr for Ar

283 + 456 = 739 torr total pressure

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