A 55.0 gram piece of iron at 154 degrees celsius is dropped into a 20.0 grams of Water at 90 degrees Celsius in an open thermally insulated container. How much water would you expect to vaporize, assuming no water splashes out? The specific heats of iron and water are 0.45 and 4.21 J/gC respectively, and Delta Hvap= 40.7 kJ/mol of Water.