When 0.152 mol of solid PH3BCl3 is introduced into a 3.0 L container at a certain temperature, 8.44 x 10-3 mol of PH3 is present at equilibrium:
PH3BCl3(s) <=> PH3(g) + BCl3(g)
Construct a reaction table for the process, and use it to calculate Kc at this temperature.