55.1 grams of tin at 90.6℃ is dropped into a calorimeter with 75.4 grams of water at 21.0℃. The temperature of both the metal and the water reaches 27.2℃. Solve for specific heat of tin.

An uncovered pot of water lies out in the sun. which statements correctly describe what happens at the surface of the liquid water? 1. the vapor pressure remains constant regardless of the water temperature. 2. the vapor pressure is produced by water molecules that have evaporated. 3. the vapor pressure increases as the sun heats the water in the pot. 4. evaporation stops once the vapor pressure reaches a certain point. 5. evaporation and condensation both occur on the liquid’s surface.