Suppose you were trying to find a substitute for na+ in nerve signal transmission. where would you begin your search? what ions would be most like na+? for each ion you propose, explain the ways in which it would be similar to na+ and the ways it would be different. use periodic trends in your discussion.

Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (use the periodic table as necessary.) group most likely ionic charge # of valence electrons i +1 ii +2 iii +3 iv +4 or -4 v -3 vi -2 vii -1 viii 0

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

Why doesn't heat added to water make the tempature rise above 100c