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Michael
Michael asked in Science & MathematicsPhysics · 8 years ago

Thermal Physics Question...HELP!!?

helium is monatomic with RAM 4.0 calculate the density of helium gas at tempertaure 0 celcius and pressure 101kPa

Please help...I dont know where to start with this question

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  • za
    Lv 7
    8 years ago
    Favorite Answer

    PV = nRT. P is given. V is the volume. n is the number of moles - so take one mole. n = 1. R = gas constant = 8.3144621 J K−1 mol−1, and T is given. 0 deg C = 273.15 K.

    Hence find the molar volume, V. Mass = 4 g = 0.004 kg.

    Divide mass by volume to get density.

    Source(s): http://en.wikipedia.org/wiki/Gas_constant
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