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Problem of the Week Archive

Collection of all our problem of the week threads.

667 Posts
57 Topics

Last post by Borek
in Re: Not a problem of the...
on November 19, 2017, 06:34:32 AM

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Stoichiometry calculator

Started by Borek | Last post by KristinW March 12, 2019, 09:57:01 AM

4 Replies
32833 Views
Last post March 12, 2019, 09:57:01 AM
by KristinW
μ* in Raoult vs μ* in Henry for Chemical Potential

Started by Mercento | Last post by Mercento September 15, 2019, 04:34:35 AM

0 Replies
55 Views
Last post September 15, 2019, 04:34:35 AM
by Mercento
Role of the reference electrode on ISE measurments with its own inner solution?

Started by javhert | Last post by javhert September 14, 2019, 12:26:32 PM

0 Replies
59 Views
Last post September 14, 2019, 12:26:32 PM
by javhert
Which of the following elements/ions has the most valence electrons?

Started by chocolatteeeee | Last post by Borek September 15, 2019, 03:21:00 AM

1 Replies
74 Views
Last post September 15, 2019, 03:21:00 AM
by Borek
Spray on chrome solution

Started by rvzoggel | Last post by rvzoggel September 03, 2019, 02:35:33 PM

0 Replies
95 Views
Last post September 03, 2019, 02:35:33 PM
by rvzoggel
MOVED: IUPAC Periodic Table Challenge

Started by Mitch | Last post by Mitch August 22, 2019, 03:09:10 PM

0 Replies
98 Views
Last post August 22, 2019, 03:09:10 PM
by Mitch
Lab Clarification

Started by dja01 | Last post by dja01 September 07, 2019, 07:12:18 PM

0 Replies
99 Views
Last post September 07, 2019, 07:12:18 PM
by dja01
Separating components of mixture

Started by dja01 | Last post by AWK September 13, 2019, 04:07:54 PM

2 Replies
107 Views
Last post September 13, 2019, 04:07:54 PM
by AWK
Theoretical Percentage of 22% w/w sucrose

Started by needhelpasap | Last post by Borek September 11, 2019, 02:40:18 AM

1 Replies
109 Views
Last post September 11, 2019, 02:40:18 AM
by Borek
TBE 10x buffer

Started by AnaAlexKonda | Last post by chenbeier August 27, 2019, 11:52:20 AM

1 Replies
116 Views
Last post August 27, 2019, 11:52:20 AM
by chenbeier
Do following half-reactions have electrode potential that depends on pH?

Started by dolphinsea14 | Last post by Borek September 03, 2019, 06:53:30 PM

1 Replies
118 Views
Last post September 03, 2019, 06:53:30 PM
by Borek
Equation for synthesis of ICl3

Started by Xieon | Last post by AWK September 09, 2019, 02:54:23 AM

1 Replies
123 Views
Last post September 09, 2019, 02:54:23 AM
by AWK
Identification of reaction products

Started by always12345 | Last post by Vidya September 06, 2019, 08:44:23 PM

1 Replies
125 Views
Last post September 06, 2019, 08:44:23 PM
by Vidya
why some elements have multiple valency?!

Started by mana | Last post by Enthalpy Yesterday at 01:07:13 PM

3 Replies
129 Views
Last post Yesterday at 01:07:13 PM
by Enthalpy
Tiny impurities appearing in solutions

Started by guferr | Last post by jeffmoonchop September 12, 2019, 12:26:19 PM

2 Replies
130 Views
Last post September 12, 2019, 12:26:19 PM
by jeffmoonchop
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