Please solve the following. Write neatly Thank you

Calculate the molarity if the density of 70.0wt%HClO4 is 1.664g/mL. 1.16000M 116.0M None of those 11.6M0.0116M23.4M Question 5 ( 2 points) The molarity of a 1ppb dilute aqueous solution can be expressed as 1g/mL1kg/L1ng/mL. None of those 1mg/L. 1g/mL. Question 6 (2 points) Calculate the coefficient of variation (CV) for the following replicate measurements for the iron content of a water sample: Fe2t content for water sample (pom): (a) 34.6 (b) 29.5 (c) 32.2 (d) 33.7 (e) 34.6 (f) 32.4 (g) 35.1 Report the final answer to one decimal place without the unit