(15). If professor Mancuso is not watching you do the crystallization experiment

Question

(15). If professor Mancuso is not watching you do the crystallization experiment how can you "cheat" (a) steal someone else's sample (b) use a another crystal to put in your lab report (c) take a classmate's hair and put it in the flask (d) freeze your sample (16). Why does sodium benzoate dissolve more in water compared to benzoic acid? (a) because its more polar (b) because the delta S is 0 (c) because the electrostatic delta H is more negative (d) because it can hydrogen boned (17). Why would you make sure you that your distillation apparatus is not completely sealed? (a) so professor Mancuso does not yell at you (b) so it does not explode (c) so your samples condense faster (d) so the sample boils (18). What interactions would you expect between methyl orange and a fabric (I) Hydrogen bonding (2) Ionic interactions (3) covalent bonds (4) Dipole-dipole interactions (5) van der waals interactions (a) all of the above (b) 1 (c) 3 (d) 4 (e) 5 (19). The ordered steps of crystallization are (a) growth, nucleation, termination (b) termination, nucleation, growth e) nucleation, growth, termination

Explanation / Answer

15) d.Freeze your sample

16)a.Because it is more polar

17)c.So your sample condense faster

19)c.nucleation,growth,termination

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