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3 years ago

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A 0.6-m3 gas tank holds 5 moles of nitrogen gas (N2), at a temperature of 320 K. The atomic mass of nitrogen is 14 g/mol, the mo

lecular radius is 3.0 × 10-10 m, and the Boltzmann constant is 1.38 × 10-23 J/K. The root-mean-square speed (thermal speed) of the molecules is closest to:

1 answer:

Bond [772]3 years ago

3 0

Answer:

533.92 m/s

Explanation:

The root-mean-square speed of a gas is given by v = √(3RT/M)

R = molar gas constant = 8.3145 J/mol-K

T = Temperature = 320 K

M = Molar mass of Nitrogen in kg/mol = 2 × 14 × 10⁻³ kg/mol = 28 × 10⁻³ kg/mol

v = √(3RT/M) = √(3 × 8.3145 J/mol-K × 320 K/28 × 10⁻³ kg/mol) = √7981920/28 = √285.068.57 = 533.92 m/s

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