Astock solution of cu2+(aq) was prepared by placing 0.8875 g of solid cu(no3)2∙2.5 h2o in a 100.0-ml volumetric flask and diluting to the mark with water. what is the concentration (in m) of cu2+(aq)in the stock solution? molar mass of cu = 63.55 g/mol.

Idid a lab for chemistry where we put nails in a copper (ii) chloride solution. 1. why did the reaction stop? which reactant was used up? how do you know? 2. describe what was happening to the atoms of iron and copper during the reaction. what is this type of reaction called? 3. what would happen to the ratio of copper to iron if you had placed more nails in the beaker? if you had let the reaction go for less time? 4. what is the accepted ratio of copper atoms to iron atoms in this reaction? account for differences between your experimental value and the accepted value. write the balanced equation for the reaction.