Mixtures cannot be separated by physical means are the same as compounds are always solutions are not chemically united and sand is made of different types of rocks. the shapes and sizes of the rocks are not all the same. sand is a compound solution mixture solute

What forms when chemical reactions combine pollution with sunlight?

Nonpoint source pollution is difficult to control because it

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.