Question: One of the properties we associate with diamonds is their luster. How would you define this
term?

Plz help?!

How are isotopes of the same chemical element alike? how are they different?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Amixture initially contains a, b, and c in the following concentrations: [a] = 0.300 m , [b] = 1.05 m , and [c] = 0.550 m . the following reaction occurs and equilibrium is established: a+2b⇌c at equilibrium, [a] = 0.140 m and [c] = 0.710 m . calculate the value of the equilibrium constant, kc.