(a) What volume of distilled water is needed to dilute 45.0 cm³ of 0.68 g cm^-3 HNO3(aq) to 0.45 mol dm^ -3 ? (b) the diluted HNO3(aq) in (a) is left uncovered for three hours, 30.0cm³ of the HNO3 (aq) remains. What is the molarity of this solution? ​

A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.