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Chemistry Olympiads - links to national competitions problems

Started by Borek « 1 2 » | Last post by Vidya May 12, 2023, 10:48:37 PM

18 Replies
80729 Views
Last post May 12, 2023, 10:48:37 PM
by Vidya
Chemistry Olympiads forum - initial remarks

Started by Borek | Last post by Rutherford March 22, 2014, 12:50:00 PM

1 Replies
21107 Views
Last post March 22, 2014, 12:50:00 PM
by Rutherford
MOVED: Mass% and average molecular weight

Started by Borek | Last post by Borek September 23, 2024, 03:58:06 AM

0 Replies
2734 Views
Last post September 23, 2024, 03:58:06 AM
by Borek
How do I calculate the pH of a 0.1 M solution of (N2H5) (HSO4)?

Started by dolphinsea14 | Last post by Borek July 15, 2024, 04:27:50 PM

3 Replies
5175 Views
Last post July 15, 2024, 04:27:50 PM
by Borek
Hess Law's

Started by happyangela | Last post by sjb May 11, 2024, 12:18:20 PM

2 Replies
6588 Views
Last post May 11, 2024, 12:18:20 PM
by sjb
2 Replies
6340 Views
Last post April 03, 2024, 07:36:00 AM
by antonioro00071
0 Replies
9583 Views
Last post March 08, 2022, 03:44:57 PM
by dolphinsea14
Chemical formula of tooth erosion

Started by Dihiya | Last post by Dihiya May 09, 2021, 04:10:28 AM

2 Replies
9603 Views
Last post May 09, 2021, 04:10:28 AM
by Dihiya
Latin American Chemistry Competition (2nd edition)

Started by nicomanno | Last post by nicomanno February 16, 2021, 06:29:20 PM

0 Replies
9107 Views
Last post February 16, 2021, 06:29:20 PM
by nicomanno
Flemish chemistry olympiad question

Started by yuheng_wu | Last post by AWK December 17, 2020, 03:11:12 AM

4 Replies
10465 Views
Last post December 17, 2020, 03:11:12 AM
by AWK
Can someone tell me what I'm doing wrong here? (calculation)

Started by yuheng_wu | Last post by yuheng_wu December 17, 2020, 02:50:55 AM

6 Replies
11417 Views
Last post December 17, 2020, 02:50:55 AM
by yuheng_wu
Question about coordinate covalent bond

Started by yuheng_wu | Last post by yuheng_wu December 16, 2020, 02:06:23 PM

2 Replies
14926 Views
Last post December 16, 2020, 02:06:23 PM
by yuheng_wu
Ideal gas law question

Started by yuheng_wu | Last post by AWK December 16, 2020, 05:16:36 AM

3 Replies
9845 Views
Last post December 16, 2020, 05:16:36 AM
by AWK
Baltic Chemistry Competition (online)

Started by Kaspijs | Last post by Kaspijs October 11, 2020, 02:55:06 PM

3 Replies
12583 Views
Last post October 11, 2020, 02:55:06 PM
by Kaspijs
d orbital splitting

Started by bluebunny2020 | Last post by bluebunny2020 March 09, 2020, 03:55:59 PM

0 Replies
8418 Views
Last post March 09, 2020, 03:55:59 PM
by bluebunny2020
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