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NO2 problem

Started by oque | Last post by mjc123 May 03, 2019, 07:55:23 AM

5 Replies
2679 Views
Last post May 03, 2019, 07:55:23 AM
by mjc123
2020 US National Chemistry Olympiad

Started by trienebutdiene | Last post by trienebutdiene June 23, 2019, 11:00:06 AM

0 Replies
2198 Views
Last post June 23, 2019, 11:00:06 AM
by trienebutdiene
How can I find Taiwan Chemistry Olympiad past papers?

Started by Ev3r3sT | Last post by Ev3r3sT July 02, 2019, 01:00:41 PM

0 Replies
1909 Views
Last post July 02, 2019, 01:00:41 PM
by Ev3r3sT
Fast method to determine if a compound is polar or non polar

Started by kooryan | Last post by Lifeforbetter January 24, 2020, 10:51:04 AM

2 Replies
1799 Views
Last post January 24, 2020, 10:51:04 AM
by Lifeforbetter
d orbital splitting

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

0 Replies
1537 Views
Last post March 09, 2020, 03:55:59 PM
by bluebunny2020
Baltic Chemistry Competition (online)

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

3 Replies
3698 Views
Last post October 11, 2020, 02:55:06 PM
by Kaspijs
Ideal gas law question

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

3 Replies
1938 Views
Last post December 16, 2020, 05:16:36 AM
by AWK
Question about coordinate covalent bond

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

2 Replies
4126 Views
Last post December 16, 2020, 02:06:23 PM
by yuheng_wu
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
2462 Views
Last post December 17, 2020, 02:50:55 AM
by yuheng_wu
Flemish chemistry olympiad question

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

4 Replies
2070 Views
Last post December 17, 2020, 03:11:12 AM
by AWK
Latin American Chemistry Competition (2nd edition)

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

0 Replies
1713 Views
Last post February 16, 2021, 06:29:20 PM
by nicomanno
Chemical formula of tooth erosion

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

2 Replies
1756 Views
Last post May 09, 2021, 04:10:28 AM
by Dihiya
0 Replies
709 Views
Last post March 08, 2022, 03:44:57 PM
by dolphinsea14
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