Respuesta :

The relation between the mass, average speed, and temperature is given by:

u = √(3RT/M)

It is given that, temperature is 35 degree C = 35 + 273 = 308 Kelvin

The molar mass of oxygen = 0.032 kg/mole

r = 8.314 j/(mol-k)

u = √(3 × 8.314 × 308 / 0.032)

u = 489.966 m/s



The μ rms speed = 489.9661 m / s

Further explanation

Gas particles move randomly (both speed and direction, as vector)

Average velocities of gases can be expressed as root-mean-square velocity. (V rms)

[tex]\large {\boxed {\bold {\mu_ {rms} = \sqrt {\frac {3RT} {M_m}}}}[/tex]

R = gas constant, 8.314 J / mol K

T = temperature,

Mm = molar mass of the gas particles

μ rms = root mean square velocity of Gas Particles.

From this equation shows that the velocity of the gas is inversely proportional to the molar mass of the gas particles

μ ≅ 1 / mm

So that the greater the molar mass of the gas particles, the smaller the speed (the slowest)

Oxygen gas molecule, O₂ has a molar mass: 0.032 kg / mol

T = 35 C + 35 + 273 = 308 K

then :

[tex]\rm \mu_{rms}=\sqrt{\dfrac{3\times 8.314\times 308}{0.032} }\\\\\mu_{rms}=489.9661\frac{m}{s}[/tex]

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