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New volume of a gas from the gas laws when temperature and pressure change

This type of question, asked 3 times: 25 Apr 2025 S2, 18 Apr 2026 S1, 13 May 2026 S2. All 3 questions below, oldest first.

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  1. Question 1

    25 Apr 2025 S2

    26
    A balloon is filled at 27∘C27^{\circ}C and 1 atmospheric pressure by volume 500 m3500{\text{ }m}^{3} helium gas. At −3∘C-3^{\circ}C and 0.5 atmospheric pressure, the volume of helium gas will be

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  2. Question 2

    18 Apr 2026 S1

    118
    An ideal gas is heated from 27 ∘C27\ ^\circ\mathrm{C} to 627 ∘C627\ ^\circ\mathrm{C} at constant pressure. If initial volume of gas is 4 m34\ \mathrm{m^3}, then the new volume of the gas will be

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  3. Question 3

    13 May 2026 S2

    119
    A balloon contains 500 m3500\ \mathrm{m^3} of He\mathrm{He} at 27∘C27^\circ\mathrm{C} and 11 atmospheric pressure. Then, volume of He\mathrm{He} at −3∘C-3^\circ\mathrm{C} and 0.50.5 atmospheric pressure will be

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