posted by Anonymous .
BaCl2(aq) + K2CrO4(aq)
BaCrO4(s) + 2 KCl(aq)
How many milliliters of 0.1200 M K2CrO4(aq) will react with 0.045 mol of BaCl2(aq)?
Use the coefficients in the balanced equation to convert moles BaCl2 to moles K2CrO4. Then M K2CrO4 = moles/L; you know M and moles, solve for L, then convert to mL.