A solution contains 7.64×10-3 M nickel(II) nitrate and 1.34×10-2 M lead acetate. Solid potassium hydroxide is added slowly to this mixture. What is the concentration of lead ion when nickel ion begins to precipitate?

What forms when chemical reactions combine pollution with sunlight?

0.09 moles of sodium sulfate in 12 ml of solution

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next