The liquid phase reaction A+B>2C+2D is to be carried out in a constant volume 15L batch reactor, with initial inlet moles of A and B of 10 and 20 moles, respectively. Calculate the concentration of B in mol/L, expressed to two decimal places when the conversion of the limiting reactant reaches 85%. (Note that in class, X was defined as a fraction. However, X may also be expressed as a percent by multiplying the fraction by 100.)