Metal sphere A has a charge of -2 units and an iden-tical metal sphere, B, has a charge of -4 units. If the spheres are brought into contact with each other and then separated, the charge on sphere B will be

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Consider the reaction: n2(g) + o2(g) ? 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?

Which of these conditions most likely produces an unstable isotope?