Jaybob3608 Jaybob3608

02-11-2022
Physics

Answered

A gas expands from 30 l to 50 l against a constant pressure of 1 atm. What is the calculated value for work? report your answer in kj to the nearest whole number.

Answer :

Paruljain Paruljain

22-11-2022

The calculated value for work is 2kJ in the nearest whole number.

The work done formula is as follows:- W = PΔV = P × (V₂ - V₁) = (1 atm) × (50 L - 30 L) = 20 Latm As,

1 atm(atmospheric) = 101325 Pa 1 Pa = 1 J/m³ So,

1 atm = 101325 J/m³1 L = 10⁻³ m³The conversion of units of work done is done as:

W = (20) × (10⁻³ m³) × (101325 J/m³) W = 2026.

5 J So, W = 2.026 kJ ≈ 2 kJ (nearest whole number) Therefore, the calculated value for work is 2kJ

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