To prevent formation of phosgene gas, what materials should be kept out of atmospheres penetrated by the uv radiation of gas-shielded welding operations?

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

The nuclear fission process releases neutrons and question 27 options: alpha particles electrons energy beta particles

16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.