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Chemistry Olympiad and other competitions

Preparing to Chemistry Olympiad or any other competition? That's the place to ask your question.

763 Posts
122 Topics

Last post by Borek
in MOVED: Mass% and average...
on September 23, 2024, 03:58:06 AM

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IUPAC name

Started by ve_90 | Last post by Borek February 24, 2025, 03:34:03 PM

5 Replies
684 Views
Last post February 24, 2025, 03:34:03 PM
by Borek
Chemical reactions and limiting reagents

Started by prem0069 | Last post by Borek January 31, 2025, 03:41:09 AM

1 Replies
3465 Views
Last post January 31, 2025, 03:41:09 AM
by Borek
is this question incomplete? calculating percent yield

Started by rambo007 | Last post by Hunter2 January 29, 2025, 12:47:04 PM

4 Replies
3812 Views
Last post January 29, 2025, 12:47:04 PM
by Hunter2
what is color fading in clothes

Started by omkar0652 | Last post by DrCMS January 27, 2025, 04:58:24 AM

1 Replies
3829 Views
Last post January 27, 2025, 04:58:24 AM
by DrCMS
Temp. Change in adiabatic process

Started by Hunter2002 | Last post by mjc123 January 19, 2025, 04:52:55 PM

1 Replies
3883 Views
Last post January 19, 2025, 04:52:55 PM
by mjc123
If a Weak Base is added to a Weak Acid, what's the pH

Started by AntonioVerde | Last post by Borek January 12, 2025, 01:09:06 PM

3 Replies
4492 Views
Last post January 12, 2025, 01:09:06 PM
by Borek
Exercise about pH

Started by AntonioVerde | Last post by Borek January 08, 2025, 11:58:41 AM

9 Replies
4756 Views
Last post January 08, 2025, 11:58:41 AM
by Borek
Reduction of potassium permanganate

Started by emma.qmc | Last post by Hunter2 January 05, 2025, 08:15:55 AM

7 Replies
4930 Views
Last post January 05, 2025, 08:15:55 AM
by Hunter2
Moisture and recrystallization

Started by lurk | Last post by lurk January 03, 2025, 01:54:09 AM

0 Replies
4705 Views
Last post January 03, 2025, 01:54:09 AM
by lurk
Substitution reaction of Hexaaquacopper(II) and ammonia

Started by Perci | Last post by Hunter2 December 27, 2024, 01:36:09 AM

7 Replies
5231 Views
Last post December 27, 2024, 01:36:09 AM
by Hunter2
Mass spectrometry A level

Started by plasos | Last post by Perci December 25, 2024, 08:58:37 AM

3 Replies
6116 Views
Last post December 25, 2024, 08:58:37 AM
by Perci
Molarity

Started by ll7080 | Last post by Meter December 21, 2024, 06:13:22 PM

3 Replies
13159 Views
Last post December 21, 2024, 06:13:22 PM
by Meter
1 Replies
4971 Views
Last post December 10, 2024, 01:49:04 AM
by Hunter2
What silver solutions will reduce with copper?

Started by Grizzly Road | Last post by Hunter2 December 09, 2024, 11:41:30 AM

3 Replies
6113 Views
Last post December 09, 2024, 11:41:30 AM
by Hunter2
How to check if such reaction occurs?

Started by anyoan1 | Last post by TriVision December 09, 2024, 11:35:49 AM

2 Replies
5056 Views
Last post December 09, 2024, 11:35:49 AM
by TriVision
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