PLEASE HELP CHEMISTRY A chemist makes 690. mL of zinc oxide (ZNC2O4) working solution by adding distilled water to 290. ML of a 0.00000934 mol/L stock solution of zinc oxalate in water
Calculate the concentration of the chemist working solution

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation: