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Pressure of a gas in a closed vessel rises by 0.4% when heated by 1 degree: initial temperature

The same question, asked 2 times: 25 Jun 2022, 3 Apr 2025. Every wording below, oldest first.

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  1. Question 1

    25 Jun 2022

    116
    When a gas filled in a closed vessel is heated by raising the temperature by 1∘C1^{\circ}C, its pressure increase by 0.4%0.4\%. The initial temperature of the gas is ____\_\_\_\_ K.

  2. Question 2

    3 Apr 2025

    92
    Pressure of an ideal gas, contained in a closed vessel, is increased by 0.4%0.4\% when heated by 1∘C1^{\circ}C. Its initial temperature must be :

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