Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoKinetic Theory of Gases and Gas LawsMedium2 minQB

PhysicsMediumnumerical

A vacuum pump reaches $1 0^{- 12}$ atm at 300 K. Find the number of nitrogen molecules per $c m^{3}$ in units of $1 0^{7}$ (two decimals).

Answer:

2.45

Solution:

$n = \frac{p}{k T} = \frac{1 0 ^{- 12} \times 1.013 \times 1 0 ^{5}}{1.38 \times 1 0 ^{- 23} \times 300} = 2.45 \times 1 0^{13}$

$m^{- 3} = 2.45 \times 1 0^{7}$ $c m^{- 3}$ .

Subject:PhysicsTopic:Heat & ThermoSubtopic:Kinetic Theory of Gases and Gas Laws

⏱ 2mℹ️ Source: QB

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