A flexible balloon contains 0.400 molmol of an unknown polyatomic gas. Initially the balloon containing the gas has a volume of 7.50 m3 and

Question

A flexible balloon contains 0.400 molmol of an unknown polyatomic gas. Initially the balloon containing the gas has a volume of 7.50 m3 and a temperature of 26.0∘C. The gas first expands isobarically until the volume doubles. Then it expands adiabatically until the temperature returns to its initial value. Assume that the gas may be treated as an ideal gas with Cp=33.26J/mol⋅K and γ=4/3.

What is the total heat Q supplied to the gas in the process?

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Farah 3 years 2021-07-18T05:26:14+00:00 1 Answers 156 views 0

Answers ( )

  1. Doris
    0
    2021-07-18T05:27:51+00:00
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    Answer:

    Mass released = 8.6 g

    Given data:

    Initial number of moles nitrogen= 0.950 mol

    Initial volume = 25.5 L

    Final mass of nitrogen released  = ?

    Final volume = 17.3 L

    Formula:

    V₁/n₁  = V₂/n₂

    25.5 L / 0.950 mol = 17.3 L/n₂

    n₂ =  17.3 L× 0.950 mol/25.5 L

    n₂ = 16.435 L.mol /25.5 L

    n₂ = 0.644 mol

    Initial mass of nitrogen:

    Mass = number of moles × molar mass

    Mass = 0.950 mol × 28 g/mol

    Mass = 26.6 g

    Final mass of nitrogen:

    Mass = number of moles × molar mass

    Mass = 0.644 mol × 28 g/mol

    Mass = 18.0 g

    Mass released = initial mass – final mass

    Mass released = 26.6 g – 18.0 g

    Mass released = 8.6 g

    Read more on Brainly.com – https://brainly.com/question/15623698#readmore

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