what is ne partal pressure it we connect the two asas through a stopcock and we
ID: 562929 • Letter: W
Question
what is ne partal pressure it we connect the two asas through a stopcock and we open the stopcock, Express the partial pressure in torr to three significant figures. or A 275-ml. fask contains pure holium at a pressure of 748 torr. A second flask with a volume of 490 mL contains pure argon at a prossure of 717 torr ? You may want to reference (Pages 433-439) Section 10.7 while completing this problem torr Submit Part B If we connect the two flasks through a stopcock and we open the stopcock, what is the partial pressure of argon? Express the partial pressure in torr to three significant figures. torr Submit Partc f we connect the two flasks through a stopcock and we open the stopcock what is the totalExplanation / Answer
Part A)
for helium (He):
pressure P1 = 748 torr
volume V1= 275ml
after mixing
total volume is V2 = 275 + 490 = 765 mL
P1 V1 = P2 V2
748 x 275 = P2 x 765
P2 = 269
partial pressure of PHe = 269 torr
part B)
p1 = 717 torr
V1 = 490 ml
total volume is V2 = 275 + 490 = 765 mL
P1 V1 = P2 V2
717 x 490 = P2 x 765
P2 = 459
partial pressure of Ar = 459 torr
part C)
total pressure = 728 torr
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