Which statements correctly describe compound potassium bromide? select all correct answers. a. potassium bromide likely has a higher melting point than does candle wax.
b. the electronegativities of the two component atoms are very similar.
c. the compound is considered a salt.
d. it contains potassium and bromide ions in a one to one ratio.
please help!

Compare and contrast physical changes with chemical changes.

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 describes a situation where competition between producers exists