Convert the composition of the following alloy from atom percent to weight percent (a) 44.8 at% of silver, (b) 46.3 at% of gold, and (c) 8.9 at% of...

Convert the composition of the following alloy from atom percent to weight percent (a) 44.8 at% of silver, (b) 46.3 at% of gold, and (c) 8.9 at% of Cu. Assume that the atomic weights for silver, gold and copper are, respectively, 107.87, 196.97 and 63.55 g/mol.