The rate of reduction of [co(oh2)(nh3)5]3+ by cr2+ is 7 orders of magnitude slower than the reduction 2+ 2+ 3+ of [co(oh)(nh3)5] by cr . for the corresponding reduction with [ru(nh3)6] , the two differ by less than a factor of 10. what do these observations suggest about the mechanism?

Achemistry student weighs out of phosphoric acid , a triprotic acid, into a volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with solution. calculate the volume of solution the student will need to add to reach the final equivalence point. round your answer to significant digits.

In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids

To apply in a gold the individual gold atoms are united to each other by means of a metallic bond. how would you use the gold block to determine the atomic radius of a gold atom?