Question

4 A common method for analyzing for the nickel content of a sample is to use a precipitation reaction. Adding the organic compound dimethylglyoscime to a solution con- taining Nions precipitates a red solid Wwe care Derive the empirical formula for the red solid based on the following composition: Ni, 20.315%; C, 33.258%; H, 4.884%; 0,22.151%, and N, 19.392%. (95) . The reaction of methane and water is one way to y prepare hydrogen for use as a fuel CH (s) + H2O(g) - CO(g) + 3 H2(g) If you begin with 995 g of CH4 and 2510 g of water (a) Which reactant is the limiting reactant? (b) What is the maximum mass of H, that can be prepared? (c) What mass of the excess reactant remains when the · reaction is completed? 12. The deep blue compound Cu(NH, SO, is made by the reaction of copper(II) sulfate and ammonia. CuSO4(aq) + 4 NHẬ(aq) + Cu(NH4)2SO4ing) (a) If you use 10.0 g of Cuso, and excess NH, what is the theoretical yield of Cu(NH).SO.? (b) If you isolate 12.6 g of Cu(NH, SO.. what is the (410/ percent yield of Cu(NH;I.SO.?

Answer 1

48 94 xio Te xC- 250)) x (bo-250) -311-41 kJ + 18.94xio -389-76 KJ