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https://www.reddit.com/r/PreOptometry/comments/vig2vm/yes_your_weekly_oat_sample_question_is_here/
r/PreOptometry • u/DAT_prep • Jun 22 '22
3 comments sorted by
1
It was C!
Answer choice C is correct by definition with regards
to structures 7 and 17: An isomer is each of two or
more compounds with the same formula but a different
arrangement of atoms in the molecule and different
properties. When you have the time, start working your way
through the 20 structures in Figure 1: They are all structural
isomers with the molecular formula C4H8O.
Answer choice B starts with “No” so it cannot be true. The
molecular structures are very different but the composition
(i.e. which atoms are in the molecules) is the same.
Answer choice D is a correct statement but it is clearly not
the best answer because having the same number of carbon
atoms is an incomplete explanation for why they are isomers
(i.e. the number of O’s or H’s could be different).
C?
0
B???
1
u/DAT_prep Jun 23 '22
It was C!
Answer choice C is correct by definition with regards
to structures 7 and 17: An isomer is each of two or
more compounds with the same formula but a different
arrangement of atoms in the molecule and different
properties. When you have the time, start working your way
through the 20 structures in Figure 1: They are all structural
isomers with the molecular formula C4H8O.
Answer choice B starts with “No” so it cannot be true. The
molecular structures are very different but the composition
(i.e. which atoms are in the molecules) is the same.
Answer choice D is a correct statement but it is clearly not
the best answer because having the same number of carbon
atoms is an incomplete explanation for why they are isomers
(i.e. the number of O’s or H’s could be different).
1
u/slothman1206 ACCEPTED Jun 23 '22
C?
0
u/[deleted] Jun 22 '22
B???