The transition from fall to winter could be considered an environmental change. Which kind of change is winter?
short-term because it lasts less than a year
long-term because it lasts more than a year
short-term because it causes changes to the DNA of a species
long-term because it does not cause changes to the DNA of a species
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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.