A 0.50 mº gas tank holds 3.0 moles of ideal monatomic Helium gas at a temperature of 250 K. What is the mms speed of the molecul es? (The Boltzmann constant is 1.38 x 10-23 J/K, NA = 6.022 x 1023 molecules/mol.)
1 answer:
Answer:
v = 1247.92 m/s
Explanation:
The formula for kinetic energy is given as follows:
Another formula that is used for Kinetic Energy is given as:
Comparing both formulae for K.E:
where,
v = rms speed of helium molecule = ?
K = Boltzmann Constant = 1.38 x 10⁻²³ J/k
T = Absolute Temperature = 250 K
m = mass of helium molecule = 6.646 x 10⁻²⁷ kg
Therefore,
<u>v = 1247.92 m/s </u>
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