Reaction Quotients

What is the reaction quotient $Q$ for the reaction $aA + bB \rightleftharpoons cC + dD$?

If for the reaction $2H_{2} + O_{2} \rightleftharpoons 2H_{2}O$, the concentrations are , , and , what is ?

For the reaction $N_{2} + 3H_{2} \rightleftharpoons 2NH_{3}$, if , which direction will the reaction shift?

What does it mean if $Q = K$ for a reaction at equilibrium?

For the equilibrium reaction $A \rightleftharpoons B$, if $[A] = 0.2 \, M$ and $[B] = 0.8 \, M$, what is ?

What is the effect of increasing the concentration of reactants on the reaction quotient $Q$?

For the reaction $C \rightleftharpoons 2D$, if $Q = 3$ and $K = 2$, what will happen to the system?

If the reaction $2SO_{2} + O_{2} \rightleftharpoons 2SO_{3}$ reaches equilibrium with , what does this indicate about the products?