October 16, 2019, 06:06:14 PM
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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.

751 Posts
120 Topics

Last post by Goblik
in Atom and Ionic Radius
on Today at 11:21:55 AM

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Last post Today at 06:03:00 PM
by Babcock_Hall
Haloalkane plus metallic sodium (Wurtz synthesis)

Started by INeedSerotonin | Last post by AWK Today at 04:31:16 PM

1 Replies
30 Views
Last post Today at 04:31:16 PM
by AWK
Relationship between ph and pka,Help

Started by Romenumeral | Last post by Borek Yesterday at 09:27:15 AM

1 Replies
74 Views
Last post Yesterday at 09:27:15 AM
by Borek
Can sb explain me how can this be solved?

Started by Romenumeral | Last post by Romenumeral October 14, 2019, 12:40:51 PM

13 Replies
246 Views
Last post October 14, 2019, 12:40:51 PM
by Romenumeral
Decomposition of Hydrogen Peroxide

Started by griley | Last post by chenbeier October 14, 2019, 09:50:15 AM

1 Replies
62 Views
Last post October 14, 2019, 09:50:15 AM
by chenbeier
pH calculation, why is calculated different?

Started by payata | Last post by payata October 13, 2019, 04:18:55 PM

3 Replies
118 Views
Last post October 13, 2019, 04:18:55 PM
by payata
Calculation in the right order (pH calculation, math)

Started by payata | Last post by AWK October 13, 2019, 01:38:23 PM

3 Replies
86 Views
Last post October 13, 2019, 01:38:23 PM
by AWK
Chemical Reactions help

Started by The_Kentucky_Kid | Last post by AWK October 13, 2019, 12:48:40 PM

1 Replies
71 Views
Last post October 13, 2019, 12:48:40 PM
by AWK
How many isomers are in this molecule?

Started by INeedSerotonin | Last post by chenbeier October 13, 2019, 11:12:21 AM

12 Replies
253 Views
Last post October 13, 2019, 11:12:21 AM
by chenbeier
What compound is it?

Started by INeedSerotonin | Last post by INeedSerotonin October 13, 2019, 09:03:21 AM

2 Replies
108 Views
Last post October 13, 2019, 09:03:21 AM
by INeedSerotonin
Determining the number of moles/percent by mass of MgCl2 in mixture

Started by Baksu888 | Last post by Borek October 12, 2019, 06:03:50 PM

3 Replies
130 Views
Last post October 12, 2019, 06:03:50 PM
by Borek
How can I find the pH of this salt?

Started by INeedSerotonin | Last post by INeedSerotonin October 12, 2019, 04:17:21 PM

5 Replies
167 Views
Last post October 12, 2019, 04:17:21 PM
by INeedSerotonin
How does the MoO4 serve as a catalyst in the iodine clock reaction

Started by ferretman25 | Last post by AWK October 11, 2019, 09:01:51 AM

1 Replies
118 Views
Last post October 11, 2019, 09:01:51 AM
by AWK
Can someone explain the steps of a problem I solved?

Started by AppleSnooop | Last post by Borek October 11, 2019, 03:08:43 AM

1 Replies
110 Views
Last post October 11, 2019, 03:08:43 AM
by Borek
I would like to know convert from umol/l to mg/l for oxigen

Started by tirengarfio | Last post by AWK October 10, 2019, 03:58:26 PM

4 Replies
217 Views
Last post October 10, 2019, 03:58:26 PM
by AWK
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