Antitumor agent, cisplatin, Pt(NH3)2Cl2 is prepared from the following reaction: K2PtCl4 + 2 NH3 ? Pt(NH3)2Cl2 + 2 KCl Assume that 10.0 g of K2PtCl4 reacts with 10.0 g of NH3. (a) Which reactant is limiting and which is in excess? (b) How many grams of the excess reactant are consumed? (c) How many grams of cisplatin are formed?