([ {(Si{O)_(2))}_(m)cdot n(S{O)_(3)}^2-cdot 2(n-x)(H)^+] }^2x--|||-C. ((Si{O)_(2))}_(m)cdot n(S{O)_(3)}^2- D. ((Si{O)_(2))}_(m)cdot n(S{O)_(3)}^2-cdot 2(n-x)(H)^+

设 sim N((M)_(1),({O)_(1)}^2),Ysim N((M)_(2)cdot ({O)_(2)}^2) ,且X与Y相互独立,设 =dfrac

4-13 273K时,反应-|||-(Cl)_(2)cdot 6(H)_(2)O(s)leftharpoons (S)_(r)(Cl)_(2)cdot 2(H)

4.9某化合物A的水合晶体A·3H2 O脱水反应过程为-|||-cdot 3(H)_(2)O(s)=!=!= Acdot 2(H)_(2)O(s)+(H)_(2

373 K 时，2(NaHC)({{O)}_3}( (s) )leftharpoons (N)({{a)}_2}(C)({{O)}_3}( (s) )+(C)(

((N{O)_(2)})/(molcdot (dm)^-3) (NO)/(molcdot (h)^-3cdot (s)^-1)-|||-① 0.025 0.04

)(m)^2cdot mo(l)^-1-|||-_(m)(NaOH)=2.172times (10)^-2(S)_(cdot cdot )(m)^2cdot m

O(nlog2n)C. O(n^2)D. O(log2n)某算法的语句执行频[1]度为(3n+nlog2n+n^2+8)，其时间复杂度为()。O(n)B.O(n

在 600 K、100 kPa 压力下，生石膏的脱水反应为(CaS)({{O)}_4}cdot 2({{H)}_2}(O)({( {s) )}=}(CaS)({

设总体X与Y相互独立，sim N(3,({O)_(1)}^2) sim N(-2,({O)_(2)}^2)，从X中抽得简单随机样本：sim N(3,({O)_(

路线如下:-|||-C2H5O-|||-Bn C3H3BrO 21 0 Bn-|||-C2H5O-|||-H B (D)-|||--C(H)_(3)cdot H