This rock know as balanced rock sits on a thin spike of rock in a canyon in idaho.

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Ответ:

davidoj13

15.03.2023

Chemistry

Answer : The root-mean-square speed of methane gas is, 739.7 m/s

Solution :

Formula used :

$v_{rms}=\sqrt{\frac{3RT}{M}}$

where,

$v_{rms}$ = root mean square speed

R = gas constant = $8.314\text{ Kg }m^2s^{-2}K^{-1}mole^{-1}$

T = temperature of gas = 78^oC=78+273=351K

M = molecular weight of methane = 16 g/mole = 0.016 Kg/mole (1 Kg = 1000 g)

Now put all the given values in the above formula, we get the rms speed.

$v_{rms}=\sqrt{\frac{3\times (8.314\text{ Kg }m^2s^{-2}K^{-1}mole^{-1})\times (351K)}{(0.016Kg/mole)}}=739.7m/s$

Therefore, the root-mean-square speed of methane gas is, 739.7 m/s

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