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Problem of the Week Archive

Collection of all our problem of the week threads.

670 Posts
59 Topics

Last post by wildfyr
in MOVED: Synthesis of N-Ac...
on January 04, 2020, 11:44:41 AM

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Stoichiometry calculator

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

3 Replies
38327 Views
Last post December 31, 2018, 02:39:30 PM
by wildfyr

Started by Zoloft | Last post by Donaldson Tan January 29, 2009, 04:44:19 AM

1 Replies
2092 Views
Last post January 29, 2009, 04:44:19 AM
by Donaldson Tan
{paraffin wax formula}

Started by mom.bob | Last post by Enthalpy June 01, 2018, 08:16:56 AM

1 Replies
1414 Views
Last post June 01, 2018, 08:16:56 AM
by Enthalpy
{neutralization}

Started by weightstud1 | Last post by Babcock_Hall October 24, 2017, 11:27:43 AM

2 Replies
1555 Views
Last post October 24, 2017, 11:27:43 AM
by Babcock_Hall
{mass percent}

Started by world_travel | Last post by jestearns May 08, 2018, 12:04:31 AM

2 Replies
1425 Views
Last post May 08, 2018, 12:04:31 AM
by jestearns
{Hydrogen bonding - halogens}

Started by sofiaAr | Last post by Burner June 03, 2016, 10:56:07 PM

1 Replies
1028 Views
Last post June 03, 2016, 10:56:07 PM
by Burner
{HELP}

Started by megh44 | Last post by Yggdrasil July 22, 2007, 01:17:26 AM

3 Replies
3909 Views
Last post July 22, 2007, 01:17:26 AM
by Yggdrasil
{Galvanic cell lab exercise}

Started by sammmyx_ | Last post by sammmyx_ June 02, 2014, 09:37:50 AM

4 Replies
2478 Views
Last post June 02, 2014, 09:37:50 AM
by sammmyx_
{delta G and Q}

Started by lukeswiss | Last post by Arkcon March 30, 2013, 09:42:14 PM

1 Replies
1316 Views
Last post March 30, 2013, 09:42:14 PM
by Arkcon
{cholesterol isolation}

Started by Joeyboy | Last post by Joeyboy April 08, 2015, 08:18:23 AM

2 Replies
1663 Views
Last post April 08, 2015, 08:18:23 AM
by Joeyboy
{change in entropy when solid NaCl melts}

Started by alharthi | Last post by Vidya September 11, 2016, 11:35:34 PM

2 Replies
1715 Views
Last post September 11, 2016, 11:35:34 PM
by Vidya
{cathode and anode}

Started by La-Lu | Last post by La-Lu November 21, 2016, 04:07:14 AM

12 Replies
3770 Views
Last post November 21, 2016, 04:07:14 AM
by La-Lu
{basic strength and pkb}

Started by Ayushmaan | Last post by kostakost November 03, 2017, 03:01:42 PM

4 Replies
1726 Views
Last post November 03, 2017, 03:01:42 PM
by kostakost
{balanced oxidation equation lead and gold}

Started by Boris Kahn | Last post by chenbeier February 11, 2018, 08:42:21 AM

1 Replies
1611 Views
Last post February 11, 2018, 08:42:21 AM
by chenbeier
{activation energy}

Started by whirlofwings | Last post by whirlofwings February 02, 2013, 02:09:53 AM

0 Replies
1719 Views
Last post February 02, 2013, 02:09:53 AM
by whirlofwings
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