Hydrogen and oxygen react to form water. ..........chemical change
Nitrogen dioxide is produced when copper is added to nitric acid. ............chemical change
Natural gas burns in a furnace .............chemical and physical change
Apr 5th, 2015
Solution stoichiometry calculations involve chemical reactions taking place in solution.
Of the various methods of expressing solution concentration the most convenient for general
laboratory use is molarity, which is defined:
Moles of solute nsolute
Molarity = or M =
Liters of solution L soln
Chemical reactions are written in terms of moles of reactants and products; this molarity
concentration unit relates moles of solute to volume of solution. Thus, easily measured solution
volumes provide a simple method of measuring moles of reactants.