A 285- m L flask contains pure helium at a pressure of 754 t o r r . A second fl

Question

A 285-mL flask contains pure helium at a pressure of 754torr . A second flask with a volume of 485mL contains pure argon at a pressure of 715torr.

a.) If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of helium?

b.) If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of argon?

c.) If the two flasks are connected through a stopcock and the stopcock is opened, what is the total pressure?

Explanation / Answer

295 ml + 475 ml = 770 total ml

f the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of helium?.
744 Torr He @ 295 ml / 770 ml =
a partial pressure for He of 285Torr
======================================...
If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of argon?
719 Torr Ar @ 475 ml / 770 ml = 443.53
a partial pressure of 444 Torr for Ar
=====================================
If the two flasks are connected through a stopcock and the stopcock is opened, what is the total pressure?__
444 + 285 = a total pressure of 729 Torr

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