CHM110H5 Study Guide - Midterm Guide: Barium Sulfate, Liquid Oxygen, Redox
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Dec. 2011 final exam: a) given an aqueous solution of cr2(so4)3 at 25 c which is 1. 26m and 1. 37m, find the mole fraction, the density and the % w/w. 4. occurs in aqueous acid. (remember to use h3o+, not h+ in the balancing). Using the half-reaction method, balance the following redox reaction which. A person accidentally swallows a drop of liquid oxygen, o2(l), which has a density of b. A salt contains only barium and one of the halide ions. A 0. 158 g sample of the salt was dissolved in water, and an excess of sulfuric acid was added to form barium sulfate (baso4), which was filtered, dried, and weighed. A poisonous organic gas containing only c, o and cl was found to have c (12. 12%), cl (71. 62%). The rate of diffusion of this gas was measured to be 19. 2 ml/min. Under the same conditions, the rate of diffusion of pure methane gas (ch4) is 47. 8 ml/min.
