1. A container containing 2 L of a gas is collected at 50 K and then allowed to expand to 20.0 L. What must the new temperature be in order to maintain the same pressure? Only use your number keys to answer. 2. A sample of carbon dioxide is stored in a closed container at 0.50 atm and 300 K. The container is then heated to 600 K. Assuming the volume remains constant, the new pressure is atm. Only use your number keys to type your answer

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.

Lexy is correct because angle r is between the incident wave,  n  = 0, and a diffracted wave.