A solution of a specific vitamin has a λ max of 275 nm and a concentration of 6.18 × 10 − 7 M . The absorbance of the solution at 275 nm is A = 0.165 . What is the molar absorptivity of the vitamin at 275 nm ? A sample path length is 1.00 cm .

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

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.