Answer:
The percent recovery from re crystallization for both compounds A and B is 69.745 and 81.44 % respectively.
Explanation:
Mass of compound A in a mixture = 119 mg
Mass of compound A after re-crystallization = 83 mg
Percent recovery from re-crystallization :
Percent recovery of compound A:
Mass of compound B in a mixture = 97 mg
Mass of compound B after re-crystallization = 79 mg
Percent recovery of compound B:
Geomagnetic storms could impact power grids, blacking out entire cities, disconnecting radio communications and GPS navigation. Hope this helped! :)
Answer:
ane, al, keto
ol, al, keto
ol, al, one
ol, ane, one.
Explanation:
The suffix –ol is used in organic chemistry principally to form names of organic compounds containing the hydroxyl (–OH) group, mainly alcohols (also phenol). The suffix was extracted from the word alcohol. The suffix also appears in some trivial names with reference to oils (from Latin oleum, oil).
Functional group is a ketone, therefore suffix = -one
Hydrocarbon structure is an alkane therefore -ane
The longest continuous chain is C5 therefore root = pent
The first point of difference rule requires numbering from the left as drawn to make the ketone group locant 2-
pentan-2-one or 2-pentanone
CH3CH2CH2C(=O)CH3
Answer:
asking about subjective matters
possibly leading to a testable hypothesis
addressing a gap in knowledge
I got soo confused about that last part. I didn't know if that was an option or something you needed to be answered.
Descriptive investigations are not repeatable because they are based only on observations made at a single point in time. The results may vary at a different time. In addition, descriptive investigations do not contain variables that may indicate cause-and-effect relationships.
Answer:
0.001968 M min-1
Explanation:
NH2NO2(aq) --> N2O(g) + H2O(l)
[NH2NO2],M 0.978 0.476 0.232 0.113
time, min 0 255 510 765
The average rate of disappearance over the time period form t = 0 min to t = 255 min is given as;
Average rate = Change in concentration / time taken
Change in concentration = Final Concentration - Initial concentration
Change = 0.476 - 0.978 = 0.502
time taken = 255min - 0min = 255 min
Average rate = 0.502 / 255 = 0.001968 M min-1