A solution with a total volume of 500.0 mL contains 37.1 g K2Cr2O7. If you remove 20.0 mL of this solution and then dilute this 20.0 mL sample with water until the new volume equals 500.0 mL, what is the new concentration of this solution? ( The molar mass of K2Cr2O7 is 294.18 g/mol).