chemistry 105

posted by .

A 260-mL flask contains pure helium at a pressure of 743 torr. A second flask with a volume of 480 mL contains pure argon at a pressure of 715 torr.

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

If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of argon? in torr

If the two flasks are connected through a stopcock and the stopcock is opened, what is the total pressure? in torr

  • chemistry 105 -

    I assume they are both at the same temperature initially.

    Parial pressure is dependent on mole ratio. n=PV/RT in each flask, find n for each first.
    Then ADD the n for each. That is the N for the combined.
    PV=NRT now solve for P for the combined gases.

    Parg+Phelium= P
    Parg=narg/N * P
    Phelium= nhelium/N* P

  • chemistry 105 -

    752 torr of He
    582 torr of Ar
    total=1334 torr

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chem

    A 1.00 L flask containing 450 torr of H2 is connected to and mixed with a second flask with a volume of 0.500 L containing 250 torr N2. What is the final pressure of the resulting mixed gas system?
  2. Chemistry

    A 260-ml flask contains pure helium at a pressure of 756torr . A second flask with a volume of 470ml contains pure argon at a pressure of 717 torr . A)If the two flasks are connected through a stopcock and the stopcock is opened, what …
  3. chemistry

    1 L FLASK CONTAINS NITROGEN ALONG WITH A DROP OR TWO OF WATER AT 40C THE TOTAL PRESSURE BEING 760 TORR .IF ALL THE CONTENTS ARE TRANSFERRED TO ANOTHER FLASK OF 0.5L AT THE SAME TEMPERATURE WHAT WILL BE THE PRESSURE SET UP IN THE SECOND …
  4. chemistry

    1 L FLASK CONTAINS NITROGEN ALONG WITH A DROP OR TWO OF WATER AT 40C THE TOTAL PRESSURE BEING 760 TORR .IF ALL THE CONTENTS ARE TRANSFERRED TO ANOTHER FLASK OF 0.5L AT THE SAME TEMPERATURE WHAT WILL BE THE PRESSURE SET UP IN THE SECOND …
  5. chemistry

    A 265- mL flask contains pure helium at a pressure of 747 torr. A second flask with a volume of 485 mL contains pure argon at a pressure of 721 torr .If the two flasks are connected through a stopcock and the stopcock is opened, what …
  6. Chemistry

    a 265 ml flask contains pure helium at a pressure of 756 torr. A second flask with a volume of 460 ml contains pure argon at a pressure of713 torr
  7. chemistry

    "A 280ml flask contains pure helium at a pressure of 754 torr . A second flask with a volume of 475ml contains pure argon at a pressure of 732 torr . If the two flasks are connected through a stopcock and the stopcock is opened, what …
  8. chem

    You have two flasks of equal volume. Flask A contains H2 at 0°C and 1 atm pressure. Flask B contains CO2 gas at 0°C and 2 atm pressure. Compare these two gases with respect to each of the following mass of gas (Flask A:Flask B)
  9. Chemistry

    Two separate flasks are each filled with a gas at 25.0°C; the valve between them is opened and the gases are allowed to mix. What would be the final pressure in torr after mixing, if initially H2 is in the first flask (Volume = 4.000 …
  10. Chemistry

    Consider two flasks. What are the final partial pressure of H2 and N2 after the stopcock between the two flasks is opened?

More Similar Questions