Question

volume of a gas at 7°C is 400ml. What volume of is expelled when it is heated to 27°C ? Pressure is constant​

Answer 1

Answer:

v1/t1=V2/t2

400/(273+7)k=v^2/(273+27)k

V2=482.6cm^3

482.6-400=28.6cm^3

Answer 2

$:$We have :-

→ Initial temperature (T₁) = 27°C

→ Final temperature (T₂) = 127°C

→ Initial volume (V₁) = 400 mL

→ Pressure is constant .

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Firstly let's convert the units of initial and final volume from °C to K .

Initial volume :-

⇒ 0°C = 273 K

⇒ 27°C = 27 + 273

⇒ 300 K

Final volume :-

⇒ 127°C = 127 + 273

⇒ 400 K

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Now according to Charle's Law, we know that :-

V₁/T₁ = V₂/T₂ [Constant pressure]

⇒ 400/300 = V₂/400

⇒ 4/3 = V₂/400

⇒ V₂ = (400 × 4)/3

⇒ V₂ = 1600/3

⇒ V₂ = 533.33 mL