A-level Physics (Advancing Physics)/Heat and Energy/Worked Solutions

1. Carbon dioxide sublimes at 195°K. Roughly what energy per. particle does this correspond to? 2. A certain chemical reaction requires particles with mass of the order 10−26 to move, on average, at 10ms−1. Roughly what temperature does this correspond to? °K 3. The boiling point of water is 100 °C. Roughly what energy per. particle does this correspond to? 100 °C = 373°K 4. Thermionic emission from copper requires around 5eV of energy per. particle. How hot will the wire be at this energy level? 5eV = 5 x 1.6 x 10−19 = 8 x 10−19 J particle−1 °K