Problems 10-12

Problem #10

Consider two identical houses on a hot day. The first house is naturally ventilated and the temperature inside is 85 °F. The second house is closed up and an air conditioner keeps the inside temperature at 75 °F. Which house will have the greater amount of heat conduction into the house?

Problem #11

Calculate the ΔH_r^o(Enthaply of reaction) for the reaction: P₄O₁₀ + 6H₂O_{( l )} → 4H₃PO₄

Problem #12

An ideal gas of volume 1 liter and pressure 10 bar undergoes a quasistatic adiabatic expansion until the pressure drops to 1 bar. Assume γ to be 1.4
a: What is the final volume?
b: If the initial temperature was 300 K what is the final temperature?

Solutions