Tim is experimenting with salts dissolving in water. he thinks that all salts will become more soluble as the temperature increases. he plots the data on the graph and decides that temperature has very little effect on the solubility of a) sodium nitrate. b) sodium chloride. c) potassium iodide. d) potassium nitrate.

An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)