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knlax316
knlax316 asked in Science & MathematicsChemistry · 1 decade ago

Ideal gas law..How to find R when pressure is unknown?

I know how to work these problems, but there is a question asking to find pressure, and they did not give us any pressure units so how do I find R?

Thanks!

Update:

I know that R is 62.4 when pressure is in mmHG and that it is .0821 in atm and that it is 8.314 in kPa...

However this question does not tell me which units of pressure to use..so I have no idea what to put for R?

3 Answers

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  • ☮♥♫
    Lv 6
    1 decade ago
    Favorite Answer

    If the pressure isn't given, I would just find it in atm.

    So, use R = 0.0821 L-atm/mol-K

    Hope this helps! :)

  • pirozzi
    Lv 4
    4 years ago

    Use the equation pv = nRT. p = rigidity (pascals, no longer kilopascals), v = volume (that's persevering with so might properly be removed from the equation this time), n = style of moles of gasoline (unknown, yet could stay consistent so might properly be bumped off), R = suited gasoline consistent (8.314), and T is the temperature (can the two be in kelvin or levels Celsius; right here use Celsius). you will possibly desire to be waiting to artwork it out now.

  • Anonymous
    1 decade ago

    R is the constant so you need to memorize it.

    It is 0.0821

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