helium gas occupies a volume of 0.04 cube at our pressure of 2 into 10 power 5 Newton per metre square and temperature 300 Kelvin calculate the mass of the ileum and the root mean square speed of its molecule relative molecular mass of helium is equal to and the molar gas constant is equal to 8.3 J/Mol K
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Helium gas occupies a volume of 0.04 m
3
at a pressure of
2
×
10
5
Pa (Nm
−
2
) and temperature of 300 K. Calculate
(i) the mass of the helium.
(ii) the r.m.s. speed of its molecules.
(iii) the r.m.s. speed at 432 K when the gas is heated at constant pressure to this temperature.
(iv) the r.m.s. speed of hydrogen molecules at 432 K.
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