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hannacanna

I need help!!!! PLEASE! 43. If a gas has a volume of 1 L at a pressure of 270 kPa, what volume will it have when the pressure is increased to 540 kPa? Assume the temperature and number of particles are constant. (1 point)

  • one year ago
  • one year ago

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  1. itsmylife
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    use \[PV= n RT\]

    • one year ago
  2. hannacanna
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    I don't know how to use that. :(

    • one year ago
  3. itsmylife
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    or you can say \[\Delta P V=nRT\]

    • one year ago
  4. hannacanna
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    I don't even know what this is :/

    • one year ago
  5. itsmylife
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    alright holda

    • one year ago
  6. Hannalynn11
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    P1= 270kPa V1= 1L P2=540kPa V2=? use boyles law P1V1=P2V2 V2=P1 V1/P2 V2=270 * 1/ 540 V2= 0.5L that's the answer

    • one year ago
  7. hannacanna
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    thank you so much Hannah! Cause I had no idea how to do that! Can you help me with something else??

    • one year ago
  8. Hannalynn11
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    you're welcome.And sure!

    • one year ago
  9. itsmylife
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    \[P _{1}V _{1}=P_{2}V _{2}\] use this

    • one year ago
  10. hannacanna
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    Okay Hannah, I have this one How many grams of O2 are in 5.0 moles of the oxygen gas?

    • one year ago
  11. itsmylife
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    because number of moles, R and temperature is constant

    • one year ago
  12. hannacanna
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    Sodium reacts with chlorine gas to form sodium chloride. Write a balanced chemical equation for the reaction, and find the mass of chlorine gas that will react with 96.6 g of sodium. (3 points)

    • one year ago
  13. itsmylife
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    \[W=n* M=5*16=80g\] 80 gm of oxygen

    • one year ago
  14. hannacanna
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    Oh thanks!!!

    • one year ago
  15. Hannalynn11
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    For the first one, you need atomic mass of O2. Take the # of moles and multiply by atomic mass. Divide by 1mole for units to cancel. 2.00moles O2 * (32.0 grams)= 64.0 grams of O2. Im sure that's how to do it

    • one year ago
  16. itsmylife
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    oh wait, its 5 * 32 = 150 gms

    • one year ago
  17. itsmylife
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    its just number of moles* molar mass

    • one year ago
  18. hannacanna
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    Okay which one are we on again? I'm confused.

    • one year ago
  19. hannacanna
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    Are we talking about this one? Sodium reacts with chlorine gas to form sodium chloride. Write a balanced chemical equation for the reaction, and find the mass of chlorine gas that will react with 96.6 g of sodium. (3 points)

    • one year ago
  20. itsmylife
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    mine solution was to find weight of oxygen

    • one year ago
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