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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 KristinW March 12, 2019, 09:57:01 AM

4 Replies
33282 Views
Last post March 12, 2019, 09:57:01 AM
by KristinW
3 Replies
72 Views
Last post Today at 01:37:38 AM
by Corribus
electronegativity in different molecules

Started by mana | Last post by AWK October 18, 2019, 04:15:01 AM

4 Replies
117 Views
Last post October 18, 2019, 04:15:01 AM
by AWK
Chem1 homework question

Started by Krusinek | Last post by Enthalpy October 17, 2019, 04:29:33 PM

2 Replies
102 Views
Last post October 17, 2019, 04:29:33 PM
by Enthalpy
electron cloud of the anion and covalent character of a bond

Started by mana | Last post by mana October 17, 2019, 01:28:36 PM

0 Replies
41 Views
Last post October 17, 2019, 01:28:36 PM
by mana
Writing chemical reactions

Started by id1oteque | Last post by AWK October 15, 2019, 04:17:27 PM

1 Replies
96 Views
Last post October 15, 2019, 04:17:27 PM
by AWK
COH4 disolved in water

Started by Revrim | Last post by AWK October 15, 2019, 11:48:26 AM

2 Replies
124 Views
Last post October 15, 2019, 11:48:26 AM
by AWK
Theoretical yield issue

Started by murmelburmel | Last post by murmelburmel October 15, 2019, 11:35:12 AM

4 Replies
153 Views
Last post October 15, 2019, 11:35:12 AM
by murmelburmel
Can sb please help me ?

Started by Romenumeral | Last post by sjb October 14, 2019, 07:46:11 AM

3 Replies
106 Views
Last post October 14, 2019, 07:46:11 AM
by sjb
trend of atomic size in inner transitional elements?

Started by mana | Last post by mana October 14, 2019, 04:16:12 AM

0 Replies
66 Views
Last post October 14, 2019, 04:16:12 AM
by mana
Copper Sulfide Reaction Post Lab

Started by ortrocad | Last post by AWK October 12, 2019, 04:54:34 AM

2 Replies
134 Views
Last post October 12, 2019, 04:54:34 AM
by AWK
Buffer preparation

Started by pyngjls | Last post by Babcock_Hall October 11, 2019, 09:21:31 AM

2 Replies
138 Views
Last post October 11, 2019, 09:21:31 AM
by Babcock_Hall
Extractions

Started by Jstub | Last post by Jstub October 10, 2019, 04:08:08 PM

2 Replies
97 Views
Last post October 10, 2019, 04:08:08 PM
by Jstub
How does MoO4 serve as a catalyst in the iodine clock reaction

Started by ferretman25 | Last post by Borek October 09, 2019, 01:27:16 PM

1 Replies
136 Views
Last post October 09, 2019, 01:27:16 PM
by Borek
Yttrium-Arsenic-Selenium

Started by labeled | Last post by Enthalpy October 09, 2019, 06:49:44 AM

3 Replies
189 Views
Last post October 09, 2019, 06:49:44 AM
by Enthalpy
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