Which of the following pairs of aqueous solutions will form a precipitate when mixed? Which of the following pairs of aqueous solutions will form a precipitate when mixed? HCl + LiOH MgCl2 + KOH K2CO3 + HNO3 Li2S + HCl All of these solution pairs will produce a precipitate.

MgCl2 + KOH will yield a precipitate.

Explanation:

The pairs of aqueous solutions of which are listed above and  the pair MgCl2 + KOH will yield a precipitate.Based on the solubility chart we can reason that Mg(OH)is examined  as "insoluble", so it will form a precipitatewhere else the other reactions which are listed above are not stable and it quickly decomposes into water and carbon dioxideMgCl2 is used in the medical field for skin-related issues

Contained in chromosomes which are located in the nucleus of the cell.

Answer is: value of q is 5·10⁻⁶m.chemical reaction: mg²⁺(aq) + co₃²⁻(aq) → mgco₃(s).c(mg²⁺) = 2.5·10⁻³ m; concentration of magnesium cations.c(co₃²⁻) = 2.00·10⁻³ m; concentration of carbonate anions.q = c(mg²⁺)  · c(co₃²⁻).q = 2.5·10⁻³ m  · 2.00·10⁻³ m.q = 5·10⁻⁶m.q = 0.000005 m.