Question

31. What will be the mass of hydrogen gas, H2, that is stored in a 15.0-L container at the prem 7.50 atm? The container is kept at 20.0°C. (Use molar mass of 2.00 g/mol for the hydro- 137 g b. 9.35 g a. c. 225 g d. 80.0 g 32. A conjugate acid-base pair is related by the loss and gain of H between 2 corresponding compounds on opposite sides of the reaction arrow. b. a. is not related in any way. has the base donating an H to form its conjugate base. d. C. has the acid donating an H to form its conjugate acid. 33. The equilibrium constant Ka for the reaction of molecular hydrogen and molecular ic gas phase is 54.3 at 430°C. H2 (g)12(8) 2H1(g) Which of the following statements is true for this reaction at equilibrium? The product concentration is larger than the reactant concentration. b. The reactant concentration is the same as the product concentration. The reactant concentration is larger than the product concentration d. None of these answer choices are correct а. с. 34. A solution with a pH of 13.3 is a. strongly acidic b. weakly acidic c. weakly basic d. strongly basic Whenever an equilibrium constant, Keg has a value greater than 1, which of the statements is true at equilibrium? The concentration of the products is greater than the concentration of the 35. a. reactants. The concentration of products is the same as the concentration of reactants. b. Relative composition of reaction mixture cannot be predicted. The concentration of reactants is greater than the concentration of the pro c. d. 36. Indicate what the missing words are in the following statement of Charles's la pressure, the volume of a gas sample is a. inversely; Kelvin b. directly; Celsius . proportional to its c. directly; Kelvin d. inversely; Celsius 37. What volume of 2.00 % (w/v) NaCl must be diluted to make 10.00 mL. of 0. known as normal saline solution? c. 9.0 mL d. 4.5 mL a. 0.18 mL b. 22.2 mL

Answer 1

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