The lewis structure of o2 has a double-bond ?
true or false

Stage in which a typical star has completely stopped fusion

Can someone me with 3 and 4 plz. this is for masteries test.

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.