What is the molarity of 4 qof NaCl (MM=58.45) in 3,800 mL of solution?

0.018 M
0.001 M
1.052 M
0.062 M

chemistry

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.