How many grams of aluminum must react to displace all the silver from 28.6 g of silver nitrate? The reaction occurs in aqueous solution.So you have 0.168mol of nitrateIt has a charge of -1Aluminum has a charge of 3+, so you only need 1 aluminum per 3 nitrate, or 1/3 as many AlSo that means you need 0.0560mol of Al0.0560 x 26.98 gmol 1.51g Al+3 ionThe answer above me is incorrectThey do not round properly or use use proper significant digitsThey took the molar mass of silver nitrate to three sig digits off the batThis is incorrect because the molar mass of silver nitrate is given to you, whereas you only apply sig digits to numbers you come up with yourself.Other related question