What are groups 1, 2, and 3 examples of on the periodic table

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

In which reaction is precipitation occurring?

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.