A 1.02 liter flask contains a certain quantity of ideal gas, Ask an Expert

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Q1. A diver beneath the surface of an ocean shines a bright searchlight up at an angle of 37 degrees to the vertical. At what angle does the light emerge into the air? The refractive index of water is 1.33.

Q2. A 1.02 liter flask contains a certain quantity of ideal gas at 315 K. Then an equal number of molecules of the same gas are added to the flask, after which the absolute pressure is 1.60 times its original value. What is a final temperature?

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