the percent yield of p4O10 when 6.2 g of phosphorus burns in excess oxygen is 67.0. what is the actual yield of P4O

Calculate the molarity of each aqueous solution: a. 78.0 ml of 0.240 m naoh diluted to 0.250 l with water b. 38.5 ml of 1.2 m hno3 diluted to 0.130 l with water