A chemist set up a synthesis of phosphorus trichloride by reacting 12.0 grams of phosphorus with 35.0 grams of Cl2. 42.4 grams of phosphorus trichloride was produced. Calculate the percent yield of this compound.

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.

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o

What does the symbol (–hfus) indicate in a phase change?