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Problem of the Week Archive

Collection of all our problem of the week threads.

669 Posts
58 Topics

Last post by Borek
in Re: Chemistry
on October 12, 2019, 04:03:28 AM

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Stoichiometry calculator

Started by Borek | Last post by wildfyr December 31, 2018, 02:39:30 PM

3 Replies
43528 Views
Last post December 31, 2018, 02:39:30 PM
by wildfyr
Reaction types

Started by Pat79 | Last post by Pat79 Today at 09:35:23 AM

5 Replies
162 Views
Last post Today at 09:35:23 AM
by Pat79
How do I remove solvent from aftershave?

Started by charlie8484 | Last post by Borek May 07, 2021, 11:29:52 AM

2 Replies
101 Views
Last post May 07, 2021, 11:29:52 AM
by Borek
MOVED: Solution chemistry

Started by sjb | Last post by sjb May 05, 2021, 04:58:37 AM

0 Replies
92 Views
Last post May 05, 2021, 04:58:37 AM
by sjb
Salt bridge and ion movements

Started by mana | Last post by Borek May 04, 2021, 04:29:44 PM

3 Replies
193 Views
Last post May 04, 2021, 04:29:44 PM
by Borek
Effective nuclear charge

Started by j.s_g | Last post by j.s_g May 03, 2021, 04:39:49 PM

2 Replies
158 Views
Last post May 03, 2021, 04:39:49 PM
by j.s_g
Why does a diatomic gas has only half the volume?

Started by Maths___Man | Last post by Orcio_Dojek May 01, 2021, 05:02:28 PM

3 Replies
253 Views
Last post May 01, 2021, 05:02:28 PM
by Orcio_Dojek
0 Replies
119 Views
Last post April 30, 2021, 02:48:00 AM
by renzoms
Thermodynamics: Enthalpy

Started by jazzy_mannn | Last post by Orcio_Dojek April 29, 2021, 09:12:18 AM

1 Replies
218 Views
Last post April 29, 2021, 09:12:18 AM
by Orcio_Dojek
Help with chemical reactions

Started by carlepy | Last post by Borek April 29, 2021, 03:07:46 AM

1 Replies
153 Views
Last post April 29, 2021, 03:07:46 AM
by Borek
definitions of buffer solution

Started by Win,odd Dhamnekar | Last post by Babcock_Hall April 28, 2021, 03:33:09 PM

7 Replies
290 Views
Last post April 28, 2021, 03:33:09 PM
by Babcock_Hall
Pi backbonding question

Started by egilbreth | Last post by Orcio_Dojek April 27, 2021, 11:18:10 AM

1 Replies
178 Views
Last post April 27, 2021, 11:18:10 AM
by Orcio_Dojek
Acid reaction with cotton fabric blended with synthetic fabrics

Started by Avian | Last post by Ben111 April 26, 2021, 04:07:27 PM

1 Replies
158 Views
Last post April 26, 2021, 04:07:27 PM
by Ben111
question about IUPAC bioplastic definition

Started by ivymoro | Last post by billnotgatez April 26, 2021, 12:12:56 PM

1 Replies
150 Views
Last post April 26, 2021, 12:12:56 PM
by billnotgatez
Any help? My metal thermometer probe dissolved!

Started by Monoamine | Last post by Corribus April 26, 2021, 09:15:40 AM

5 Replies
272 Views
Last post April 26, 2021, 09:15:40 AM
by Corribus
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