The reversible chemical reaction

$A+BC+D$

has the following equilibrium constant:

$K_c=\frac{[C][D]}{[A][B]}=4\mathrm{.}4$

Initially, only A and $B$ are present, each at $2\mathrm{.}00M.$ What is the final concentration of A once equilibrium is reached?

Express your answer to two significant figures and include the appropriate units.

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$$

$[A]=$

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Part B

What is the final concentration of $D$ at equilibrium if the initial concentrations are $[A]=1\mathrm{.}00M$ and $[B]=2\mathrm{.}00M?$

Express your answer to two significant figures and include the appropriate units.

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$[D]=$