In order to analyze the waste water containing Co2+ from a manufactur- ing process, 1.0 L of water was evaporated to 10.0 mL and then placed in a spectrophotometer tube. The absorbance was found to be 0.30 A
(63% transmittance), Using your calibration curve, calculate the number
of milligrams of Co2 in 1.0 L of waste water,

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

When would a bouncy ball have the most potential energy

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.