A 295-mL flask contains pure helium at a pressure of 745torr . A second flask wi
ID: 811712 • Letter: A
Question
A 295-mL flask contains pure helium at a pressure of 745torr . A second flask with a volume of 465mL contains pure argon at a pressure of 729torr .
If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of helium?
If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of argon?
If the two flasks are connected through a stopcock and the stopcock is opened, what is the total pressure?
With steps on how to do these please!
Explanation / Answer
295 ml + 465 ml = 760 total ml
(a)
If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of helium?.
745 Torr He @ 295 ml / 760 ml = 289.2
a partial pressure for He of 289.2 Torr
(b)
If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of argon?
729 Torr Ar @ 465 ml / 760 ml = 446.03 torr
a partial pressure of 446.03 Torr for Ar
(c)
If the two flasks are connected through a stopcock and the stopcock is opened, what is the total pressure?__
446.03 + 289.2 = a total pressure of 735.2 Torr
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