Compare nitrogen-14 and nitrogen-15. How are they the same and how are they different?

If the element whose electric configuration ends in the d sublevel, the element is calssified as? a. inner transition b. noble gases c. representative d. transition

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both