Chemistry

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In the theoretical reaction

2 B(aq) + 3 D(aq) ---> E(aq) + 4 F(aq)

the concentration of D(aq) is 0.40 mol/L. If 25.0 mL of aqueous B is needed to react completely with 30.0 mL of aqueous D, the concentration of B(aq) is

A-0.48 mol/L
B)
B-0.32 mol/L
C)
C-0.40 mol/L
D)
D-0.72 mol/L

I answered B?

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