A worker pressurizes a rigid pipe (30 mm inside diameter and 20 m long) with dry air to check for leaks. The temperature and pressure of the pipe is 35 C and 205 kPa. The worker returns after 24 hours later and the pressure has dropped to 183 kPa and air temperature insde the pipe dropped to 21 C. Has the pipe leaked? If so, calculate the mass of the air that is leaked.

DESCRIBE THE INTERNAL ENERGY, ENTHALPY, AND SPECIFIC HEATS OF SOLIDS AND LIQUIDS

A sealed container of water is full, except for a tall thin tube that is attached to it. Water is poured into this tube, and before the tube is full the container bursts. Explain why.

Imagine that you have a rigid leak-proof container that contains nitrogen (N2) gas at atmospheric pressure and room temperature (25 °C). Now imagine that a small quantity of liquid water is added to the chamber without letting in any outside air. After some time, the air in the container is tested and is found to contain not only nitrogen gas but water vapor as well – even though the temperature never rose above 25 °C – and that the total pressure in the container increased to 1.30 atmospheres. Assuming all gasses are acting like ideal gasses, (i) calculate the final pressure of nitrogen and water vapor in the container and (ii) state what these individual pressures are called.