An unknown amount of water is mixed with 370mL of a 6M solution of NaOH solution. A 75mL sample of the resulting solution is titrated to neutrality...

An unknown amount of water is mixed with 370mL of a 6M solution of NaOH solution. A 75mL sample of the resulting solution is titrated to neutrality with 50.7mL of 6M HCl. Calulate the concentration of the diluted NaOH solution. Answer to units of M. What volume of water was added to the 370mL of NaOH solution? Assume volumes are additive. Answer in units of mL. Answer both parts to six significant digits.