Discover Questions

Number of atoms of hydrogen in two moles of NH3? What is the difference between and isotope and an ion? HELP!! What are some examples of machines that use counter-current heat exchange? Use the graph to guess one zero for the polynomial whose graph is shown. Then factor completely. f(x)=x^3-6x^2+6x+8? Is there a way to determine if a reaction is "stereospecific"??