Complete and balance the following redox reaction in basic solution
Zn(OH)22- (aq) + As(s) → Zn(s) + H2AsO4- (aq)

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

Drug abuse will not lead to physical and psychological dependence. true or false ?

Insoluble sulfide compounds are generally black in color. which of the following combinations could yield a black precipitate? check all that apply. na2s(aq)+kcl(aq) li2s(aq)+pb(no3)2(aq) pb(clo3)2(aq)+nano3(aq) agno3(aq)+kcl(aq) k2s(aq)+sn(no3)4(aq)