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Answer to Question #38386 in Physical Chemistry for Kody

Question #38386
1) How many mL of 0.895 M hydrochloric acid should be added to excess MnO2(s) to obtain 6.83 x 10^8 nL of chlorine gas at 22 degrees C and 736 torr?

2)An unknown halogen was allowed to effuse through a small opening under constant pressure conditions. It requires 79 s for 1.0 L of the unknown to effuse. Under identical conditions it required 28 s for 1.0 L of neon to effuse. Determine the molecular formula of the unknown halogen.

3) A 3.6 L flask contains 28.82 mg of ethane, 3.147 x 10^4 mg of oxygen, and 22.56 mg of ammonia at 74.43 degrees C. a)Determine the rms speed for ethane, b)the average speed for the oxygen, and c)the most probable speed for ammonia. d)calculate the average kinetic energy per molecule of each gas.
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