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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoKinetic Theory of Gases and Gas LawsMedium2 minQB

PhysicsMediumnumerical

A 10 litre vessel holds air at $0^{\circ}$ C. Some gas is let out so that the pressure falls by 0.20 atm at constant temperature. The air density at STP is 1.29 kg/ $m^{3}$ . Find the mass released in grams (two decimals). Take $p_{0} = 1$ atm.

Answer:

2.58

Solution:

At constant $T$ and $V$ , mass is proportional to pressure.

$m = ρ V \frac{Δ p}{p _{0}} = 1.29 \times 0.010 \times 0.20 = 2.58 \times 1 0^{- 3}$

kg = $2.58$ g.

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

⏱ 2mℹ️ Source: QB

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