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Problem of the Week Archive

Collection of all our problem of the week threads.

651 Posts
58 Topics
Last post by Arkcon
in MOVED: HELP please
on October 05, 2017, 06:40:58 AM
Pages: [1] 2 3 ... 542   Go Down
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0 Members and 104 Guests are viewing this board.
Not a problem of the week, but similar level of difficulty « 1 2 » Borek 16 2406 Last post October 01, 2017, 09:08:21 PM
by Borek
Could you please advice some good study book on colloidal/surface chemistry? Hedgehog 1 1057 Last post August 10, 2017, 07:26:56 PM
by Vidya
Stoichiometry calculator Borek 2 15497 Last post January 06, 2015, 04:01:01 AM
by Borek
Periodic Trends *delete me* MIBOO 5 242 Last post Today at 09:42:01 AM
by Enthalpy
MOVED: Organic Chemistry Arkcon 0 33 Last post Today at 12:42:02 AM
by Arkcon
When I compare results of X-Ray Diffraction vevesveces 0 87 Last post October 21, 2017, 02:19:09 PM
by vevesveces
Chem Help si812 1 100 Last post October 21, 2017, 08:13:50 AM
by chenbeier
Organic Chemistry Specific Rotation cclccl 1 241 Last post October 21, 2017, 06:38:07 AM
by Babcock_Hall
MOVED: oil and water characteristics difference Arkcon 0 69 Last post October 20, 2017, 03:36:16 AM
by Arkcon
Very Difficult Abstract Chemistry Brain Teaser Shaggith55 1 118 Last post October 19, 2017, 09:12:27 PM
by Borek
Intercalation reaction with Vanadium tulip11 1 103 Last post October 19, 2017, 06:34:10 AM
by mjc123
Xray diffraction interpretation tulip11 2 133 Last post October 19, 2017, 03:54:39 AM
by tulip11
synthesis of copper iodide using copper wire, iodine and sodium iodide Novia 2 156 Last post October 18, 2017, 10:48:15 PM
by Novia
How to calculate the conversion for a system of reversible and irreversible rea goggles30 0 109 Last post October 17, 2017, 09:02:31 PM
by goggles30
MOVED: Question regarding why certain elements when combined form the products they do Arkcon 0 105 Last post October 17, 2017, 09:21:59 AM
by Arkcon
Calculating Root Mean Squared Firehchicken 2 254 Last post October 15, 2017, 09:53:23 AM
by Enthalpy
Henderson Hasselbalch solubility question CCG88 6 383 Last post October 11, 2017, 06:33:04 AM
by CCG88
Mixing aqueous solutions and moles of ions Runner19 6 375 Last post October 10, 2017, 08:58:07 PM
by Borek
Van’t Hoff equation and equilibrium concentration Pliz89 4 330 Last post October 10, 2017, 05:00:55 AM
by Pliz89
Bond Order ss0034 2 263 Last post October 08, 2017, 07:00:29 AM
by ss0034
Debye-Huckel Equation & Systematic Approach JonM843 1 243 Last post October 05, 2017, 09:24:21 AM
by Borek
{neutralization} weightstud1 1 240 Last post October 05, 2017, 06:54:07 AM
by Arkcon
Beer–Lambert law problem Wblack 3 299 Last post October 04, 2017, 04:43:26 AM
by Babcock_Hall
Been stuck on this problem for the past 2 hours. atomrxn 2 332 Last post October 03, 2017, 12:07:25 AM
by Borek
polymer calculations ganesh 4 613 Last post October 02, 2017, 10:37:33 PM
by mjc123
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