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Air balloon filled up with He gas are brought to the party are they in a) mechanical equilibrium b) thermal equilibrium with surrounding atmosphere explain

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Name Chapter 20 Gases Boyle's Law A movable piston encloses 0.78 m³ of gas in a cylinder. The piston is then pushed downward, changing the volume of the gas to 0.36 m³ and the pressure to 2.8 kPa. What was the original pressure of the gas? 1. Read and Understand What information are you given? initial volume of the piston = V₁ = 0.78 m³ final volume of the piston = V₂ = 0.36 m³ final pressure of the piston = P2 = 2.8 kPa 2. Plan and Solve What unknown are you trying to calculate? original pressure of the piston = P₁ What mathematical equation can you use to calculate the unknown? Boyle's law: P₁V₁= P₂V₂ Rearrange the equation to solve for the unknown variable. P₂V₂ P₁₂₁= Substitute the values you know into the equation. (2.8 kPa) (0.36 m³) 0.78 m³ P₁ = e8 to enolisoit = 1.3 kPa of Woled surgit odi 3. Look Back and Check Is your answer reasonable? Yes, the final pressure, 2.8 kPa, is about twice the original pressure, 1.3 kPa. Origirst grwollo obsmot Math Practice On a separate sheet of…