Question

one contains helium the other contains the following questions A. The Osygen Balloon B The Helium Balloon C Both the same D. Neither Consider 2 identical halls at the same s Which haloon has the most molecules? 19 Which haillson has the greater mass? t Which balloon has a greater kinetic energy? 2. Wich balon has faster molecules? 22. 20.0L ofgasat arc is heated to 40 C If the pressure remains constant what is the new vlume? e. 40L z3 20g of hydrogen gas at O'C and 1.00ATM will occupy what volume? d. 4.0L 24 What is the partial pressure of hydrogen in a mixture that consists of 8.0 g of helium gas He af o g of ydrogen gas Hs, if the total pressure is 1200 mm Hg? (M.M. He-40 H-20 (a) 120 mm Hg (b) 240 mm Hg ( 600 mm Hs (e) 800 mm Hg (c) 400 mm Hg 25. Which of the following gases would diffuse 2 times slower than helium at a given (c) N (d) Ne 26. Which statements about equal volumes of hydrogen and helium, measured at the same (a) 0 (b) methane (CH (e) Propane (C,Hs temprature and pressure, is true? A Both gases will have the same number of atoms. B. Both gases will have the same average kinetic energy C. Helium molecules will have a greater average velocity than will the hydrogen molecules. (a) Oaly A is true (c) Only A and B are true (e) they are all true b) Oaly B is true (d) Only B and C are true 27. A sample of an ideal gas at a certain temperature and pressure has a volume of 20 liters. If the pressure on the gas is doubled and the absolute temperature of the gas is tripled, what will be the new volume? (a) 45 liters b)30 liters (c) 15 liters (d) 22.5 liters (e) 10 liters 23. Ar the same temperature which of the following gases would have the highest speed? b. Ne C. d. Xe e.

Answer 1

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