23. A compound is composed of element X and hydrogen. A mass analysis shows the compound
contains 82.35% of X, with three times as many hydrogen atoms as X atoms per molecule. Which
element is X? (atomic mass: B = 10.81, C = 12.01, N = 14.01, Al = 26.98, P = 30.97)
(A) B (B) C (C) N (D) Al (E) P
寫作批改
VIP與詳解卡管理
私人筆記( 0 )
