If I mix 7mL of a 0.1M solution of Ni with 3mL of a 0.1M solution of Co, what will be the final concentration of each, Ni and Co?

If you want to create an electrical current, which situation would produce a solution capable of this

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids