Which of the following best describes a double-replacement reaction?

a. one compound splits up, forming two or more elements or new compounds.
b. atoms in one compound switch places with atoms in another compound.
c. a lone element takes the place of a different element in a compound.
d. two elements join together to form a new 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 is the most concentratic acid

What is the scientific name for weight?