X, Y lần lượt là dung dịch H2SO4, Ba(OH)2. Trộn 30 ml X với 20 ml Y thu được 50 ml dung dịch Z. Biết rằng, để trung hòa 5 ml Z cần vừa đủ 3 ml dung dịch KOH 0,4M. Mặt khác, trộn 20 ml X với 30 ml Y thu được 50 ml dung dịch T. Biết rằng, để trung hòa 5 ml T cần vừa đủ 3 ml dung dịch HCl 1,4M. Xác định nồng độ mol của dung dịch X và Y

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.