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2 June, 23:48

At what temperature is the average speed of oxygen molecules equal to 1.12*104m/s?

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  1. 2 June, 23:57
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    we will use the root mean squared speed of oxygen formula

    v = (3RT) / M

    T = vM/3R

    where

    v = 1.12x104 m/s; velocity

    R = (8.31447 kg m2 s-2 K-1 mol-1) gas constant

    M = 0.0319988 kg/mol; molar mass of oxygen

    substituting the given values, we will get

    T (K) = 14.37K or - 258.78 C

    Oxygen molecules speed of 1.12x104 m/s is at temperature - 258.78C.
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