Determine the number of representative particles in each of the following: (a) 0.294 mol silver
atoms

(b) 8.98 10-3 mol sodium chloride
formula units

(c) 23.3 mol carbon dioxide
molecules

(d) 0.310 mol nitrogen (N2)
molecules

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.