13. How many milliliters of 6.0 M HNO3 are needed to prepare 300.0 mL of 0.50 M HNO3?
(A) 25.0
(B) 20.2
(C) 15.2
(D) 10.5
(E) none of these

答案:登入後查看
統計: 尚無統計資料