# I need help with chemical equilibrium problems

allistair3421
1. okay so the equation is:
3A+2B---->C+D
K=1.00x10(to the negative third power)
A=9.5-M C=0.0200-M D=0.0200 what is B ?

3. the answer is either 1.24: 0.0216: : 0.00180 : or 0.110
(i don't remember) so what i don't get is HOW DO I SET UP THE PROBLEM?

go step by step if you can and if you know some sites that would help post those too

$$K = \frac{[C]^c [D]^b}{[A]^a ^b}$$