1. A quantity of steam (800 g) at 115oC is condensed, and the resulting water is frozen into ice at 0oC. How much heat was removed? ______kcal
2. A sample of neon gas has its volume doubled and its temperature held constant. What will be the new pressure relative to the initial pressure? _____P1
3. Two 2.7 kg physical science textbooks on a bookshelf are 0.32m apart. What is the magnitude of the gravitational attraction among the books? _______N