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Nicholas
Nicholas asked in Science & MathematicsChemistry · 2 weeks ago

i need help with some chem homework ?

A sample of helium occupies 135 mL at 22.5°C. The pressure is 165 mm Hg. What is the pressure of the gas

sample when it is placed in a 252 mL container at a temperature of 0.0°C?

2 Answers

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  • Dr W
    Lv 7
    2 weeks ago

    Same troll.. Same troll questions.  New troll name... New troll day.  

    Attachment image
  • Jim
    Lv 7
    2 weeks ago

    PV=nRT <<<memorize!!

    T is temp in K (C+273.15)

    Since you have a before and after with the same n &R simplifies to

    PV/T initial  = PV/T final

    Now sub in your numbers and solve, round answer to 3 sigfigs

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