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CHEM 228 · Sem 1

Chemical Physics Seminar

Fall 2026Tolbert, S.H.2 units

dibs reads this section's seats hourly, like everything else, but it does not send alerts for graduate courses yet.

Seats, time, final and grades

Seats

Open, 17 seats left.

83 of 100 enrolled.

Meets

M 4:00pm-5:50pm

Every meeting the registrar lists for this section.

Final

None on the page dibs read

No exam time on the page dibs read. That is not the registrar saying there is no final.

Grades

3.93
predicted, this instructor · 64 grades

64 letter grades, Tolbert, S.H..

Read 2 hours ago. The latest refresh is overdue. Seats and instructors may have changed since. Check the registrar before enrolling.

Enroll on the registrar (opens in a new tab)

Put this class on a board

A board is one quarter you are drafting, so it needs an account to live in. Signing in brings you straight back to this page, with this class still in front of you.

Before you can enroll

Registrar's Restrictions cell, read 3 days ago: "Graduate Biochemistry, Chemistry, Geochemistry, or Molecular Biology Majors".

From the registrar

Any student attempting to save or sell a spot for another student is violating Student Conduct Code 102.23d and may be referred to the Office of the Dean of Students. Graduate students beyond their first year should enroll on an S/U basis.

Restrictions read 3 days ago. dibs re-reads these slowly because they rarely change, and it does not sweep graduate courses at all, so this one has no faster cadence to move to. Check the registrar.

When it meets

Mon
Tue
Wed
Thu
Fri
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm

Meets: M 4:00pm-5:50pm

Young Hall CS76

Grades

3.93
predicted, this instructor · 64 grades

Of the 6 other people in the grade record for CHEM 228, the 2 with the most grades: CARAM, JUSTIN RYAN at 3.99 over 115 grades and GELBART, WILLIAM M at 3.73 over 60 grades.

A range
94%
P/NP
0%
D/F/W
0.0%

Full grade history for CHEM 228

What students say

dibs measures outcomes: grades, seats, how fast it fills. For what the class is actually like to sit in, BruinWalk has the reviews.

dibs has not read this course’s reviews, so it cannot say what kind of work it sets. That is dibs not having looked. It is not a course without papers or exams, and the reviews linked below are the answer until dibs catches up.

CHEM 228 reviews for Sarah Tolbert Reviews for all professors of CHEM 228

Will it still be here

Not a question any more: see the notice at the top of this page.

Final enrollment per term from four years of grade data. Summer excluded: different population, different pass structure.

  • 9421F
  • 9522W
  • 9222S
  • 8822F
  • 9023W
  • 8923S
  • 9223F
  • 9324W
  • 9524S
  • 10824F
  • 10125W
  • 9425S
  • 8925F
Enrollment by term: 21F 94, 22W 95, 22S 92, 22F 88, 23W 90, 23S 89, 23F 92, 24W 93, 24S 95, 24F 108, 25W 101, 25S 94, 25F 89

Peak 108 · most recent 25F at 89

Seats over time

Nothing read since 1 Oct, 2 hours ago. Over about 2 months before that, filled by 70.

83 of 100 · 17 left
17 Aug 15:079 Sep 05:041 Oct 19:02 · 2 hours ago
dibs read 168 of the 516 hours its hourly record covers, 33%, and did not look in 348. dibs had no hourly record before 10 Sep, which is the other 569 of 1085 plotted.83 of 100 enrolled at the newest reading, 2 hours ago, with 17 left. Seats from 17 Aug 15:07 to 1 Oct 19:02, 13 to 83. dibs read 168 of the 516 hours its hourly record here covers, 33%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 348 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 08:00, where this section's record starts, has a read either way, which is 569 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

A dot is a reading where something moved: the seat count, the status, or the waitlist. Flat between dots joins recorded counts; changes between reads may be missed. The line starts when dibs first saw this section rather than reaching back before it existed. The last one is the last time dibs read this section, moved or not, and that was 2 hours ago. It is where the line stops, not where the count is now.

Show the readings (95)
Recorded Enrolled Capacity Status Waitlist Hours read
1 Oct 19:02 83 100 open - 1 of 1
1 Oct 19:02 83 100 open - 8 of 24
30 Sep 20:52 82 100 open - 3 of 7
30 Sep 14:42 81 100 open - 2 of 4
30 Sep 11:12 82 100 open - 3 of 8
30 Sep 04:12 81 100 open - 2 of 5
30 Sep 00:02 80 100 open - 2 of 5
29 Sep 20:32 81 100 open - 8 of 23
28 Sep 22:02 80 100 open - 2 of 5
28 Sep 18:32 73 100 open - 2 of 4
28 Sep 15:02 79 100 open - 18 of 60
26 Sep 04:52 73 100 open - 12 of 39
24 Sep 14:42 75 100 open - 9 of 29
23 Sep 10:52 73 100 open - 4 of 11
23 Sep 00:22 72 100 open - 2 of 5
22 Sep 20:52 71 100 open - 2 of 4
22 Sep 17:52 72 100 open - 4 of 10
22 Sep 08:32 71 100 open - 4 of 11
21 Sep 22:12 70 100 open - 4 of 11
21 Sep 12:42 66 100 open - 11 of 33
20 Sep 04:12 64 100 open - 3 of 8
19 Sep 21:22 62 100 open - 2 of 4
19 Sep 18:02 64 100 open - 10 of 27
18 Sep 16:12 62 100 open - 3 of 7
18 Sep 10:22 61 100 open - 6 of 17
17 Sep 18:12 60 100 open - 3 of 7
17 Sep 12:22 59 100 open - 5 of 15
16 Sep 22:32 57 100 open - 2 of 4
16 Sep 19:02 55 100 open - 2 of 5
16 Sep 15:52 54 100 open - 6 of 17
15 Sep 23:12 53 100 open - 3 of 6
15 Sep 18:32 51 100 open - 2 of 4
15 Sep 15:02 50 100 open - 2 of 5
15 Sep 11:32 47 100 open - 3 of 8
15 Sep 04:32 45 100 open - 3 of 9
14 Sep 20:52 36 100 open - 2 of 4
14 Sep 17:22 40 100 open - 2 of 4
14 Sep 14:42 36 100 open - 2 of 4
14 Sep 11:12 40 100 open - 4 of 11
14 Sep 01:02 36 100 open - 16 of 49
12 Sep 01:22 35 100 open - 2 of 3
11 Sep 23:02 33 100 open - 2 of 4
11 Sep 20:52 35 100 open - 2 of 2
11 Sep 19:26 33 100 open - 2 of 4
11 Sep 16:40 34 100 open - 3 of 4
11 Sep 13:40 33 100 open - 3 of 4
11 Sep 10:40 34 100 open - 2 of 2
11 Sep 09:40 33 100 open - 15 of 57, 31 no hourly record
9 Sep 01:40 34 100 open - no hourly record
9 Sep 00:40 32 100 open - no hourly record
8 Sep 22:40 34 100 open - no hourly record
7 Sep 01:40 32 100 open - no hourly record
5 Sep 02:40 31 100 open - no hourly record
4 Sep 01:40 30 100 open - no hourly record
4 Sep 00:40 28 100 open - no hourly record
3 Sep 23:40 30 100 open - no hourly record
3 Sep 21:40 28 100 open - no hourly record
3 Sep 18:40 30 100 open - no hourly record
3 Sep 17:40 28 100 open - no hourly record
3 Sep 16:40 30 100 open - no hourly record
3 Sep 01:40 28 100 open - no hourly record
2 Sep 23:40 27 100 open - no hourly record
2 Sep 17:40 26 100 open - no hourly record
2 Sep 16:40 27 100 open - no hourly record
2 Sep 13:40 26 100 open - no hourly record
2 Sep 11:40 27 100 open - no hourly record
2 Sep 01:40 26 100 open - no hourly record
1 Sep 21:40 24 100 open - no hourly record
1 Sep 20:40 25 100 open - no hourly record
1 Sep 18:40 24 100 open - no hourly record
1 Sep 17:40 25 100 open - no hourly record
1 Sep 12:40 24 100 open - no hourly record
1 Sep 11:40 25 100 open - no hourly record
1 Sep 10:40 24 100 open - no hourly record
1 Sep 09:40 25 100 open - no hourly record
1 Sep 01:40 24 100 open - no hourly record
31 Aug 23:40 21 100 open - no hourly record
31 Aug 22:40 24 100 open - no hourly record
31 Aug 21:40 21 100 open - no hourly record
31 Aug 19:40 24 100 open - no hourly record
31 Aug 16:40 21 100 open - no hourly record
31 Aug 15:40 24 100 open - no hourly record
31 Aug 13:40 21 100 open - no hourly record
31 Aug 12:40 24 100 open - no hourly record
30 Aug 01:40 21 100 open - no hourly record
29 Aug 01:40 20 100 open - no hourly record
28 Aug 00:40 17 100 open - no hourly record
27 Aug 23:40 16 100 open - no hourly record
27 Aug 19:40 17 100 open - no hourly record
27 Aug 16:40 16 100 open - no hourly record
27 Aug 15:40 17 100 open - no hourly record
24 Aug 12:40 16 100 open - no hourly record
18 Aug 23:40 15 100 open - no hourly record
18 Aug 04:30 14 100 open - no hourly record
17 Aug 15:07 13 100 open - -
How readings and alerts work

A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.

Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.

The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.

Class chat

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