2) Perform the following calculations (harder): a) A 5.98-g sample consisting of a mixture of silver nitrate and sodium nitrate is dissolved in water. This aqueous mixture then reacts with aqueous barium chloride to form 3.90g of silver chloride. Calculate the percent by mass of silver nitrate in the first mixture. (77.3%, b) 1.00mL of a 3.50104M solution of oleic acid is diluted with 9.00mL of petroleum ether, forming solution A. 2.00mL of solution A is diluted with 8.00mL of petroleum ether, forming solution B. How many grams of oleic acid are in 5.00mL of solution B? (molar mass for oleic acid =282g/mol)(9.87106g ) c) Mixing 40.0mL of a 4.00M sodium chloride solution with 20.0mL of a 5.00M calcium chloride solution results in a solution with a chloride ion concentration of? (6.00M )