What volume of Na2CrO4 solution is needed to precipitate all the Sr2+(aq) as SrCrO4?

In the laboratory, 5.17 g of Sr(NO3)2 is dissolved in enough water to form 0.550 L. A 0.100 L sample is withdrawn from this stock solution and titrated with a 0.0560 M solution of Na2CrO4.