Specific Latent heat 1. (a) The melting point and boiling point of lead are 327 and 1774 degrees Celsius
and -219 and -183 for Oxygen.
(i) At - 200 °C will the oxygen be a solid, liquid, or gas?
(ii) At 450 °C will the lead be a solid, liquid, or gas?
(b) The graph shown alongside shows how the temperature of a pure substance
changes as it is heated.

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)