For each of the positive ions listed in Column 1, use the periodic table to find in Column 2 the total number of electrons that ion contains. The same answer may be used more than once. Column 1Column 2

Al3+ a. 2

Fe3+ b. 10

Mg2+ c. 21

Sn2+ d. 23

Co2+ e. 24

Co3+ f. 25

Li+ g. 36

Cr3+ h. 48

i. 76

j. 81

Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral

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.

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