October 16, 2019, 08:33:05 AM
Forum Rules: Read This Before Posting


Child Boards

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

Subject / Started by Last post
0 Members and 66 Guests are viewing this board.
Stoichiometry calculator

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

4 Replies
33233 Views
Last post March 12, 2019, 09:57:01 AM
by KristinW
Need help with an "equilibrium constant" lab report

Started by meme | Last post by hmx9123 May 01, 2004, 11:42:55 PM

7 Replies
117658 Views
Last post May 01, 2004, 11:42:55 PM
by hmx9123
Determining the Kb from the Ka

Started by hunter457 | Last post by Borek November 09, 2009, 03:15:31 AM

3 Replies
111394 Views
Last post November 09, 2009, 03:15:31 AM
by Borek
how do you calculate the net charge of a peptide?

Started by elyse07 | Last post by Yggdrasil September 06, 2010, 04:30:35 PM

4 Replies
90235 Views
Last post September 06, 2010, 04:30:35 PM
by Yggdrasil
calculating number of ions

Started by hokychik | Last post by hokychik January 21, 2012, 06:17:37 PM

6 Replies
87069 Views
Last post January 21, 2012, 06:17:37 PM
by hokychik
Al + NaOH --> Al(OH)4 not Al(OH)3?

Started by zeoblade | Last post by bubblegumpi August 09, 2017, 10:59:33 AM

6 Replies
86786 Views
Last post August 09, 2017, 10:59:33 AM
by bubblegumpi
citrate phosphate buffer

Started by hopes | Last post by Borek April 14, 2005, 06:58:17 PM

12 Replies
80495 Views
Last post April 14, 2005, 06:58:17 PM
by Borek
Boyle/Charles/Gay-Lussac to Combined - How?

Started by madisonwi | Last post by madisonwi January 21, 2005, 07:23:23 PM

5 Replies
79676 Views
Last post January 21, 2005, 07:23:23 PM
by madisonwi
How do you know if its a gas, solid, or liquid?

Started by lhunt | Last post by fledarmus December 12, 2011, 04:08:51 PM

8 Replies
79006 Views
Last post December 12, 2011, 04:08:51 PM
by fledarmus
Is NaCl a base?

Started by gonzo | Last post by gonzo October 17, 2007, 01:18:05 PM

9 Replies
77436 Views
Last post October 17, 2007, 01:18:05 PM
by gonzo
neutralization of NH3 and HCl

Started by lmonte | Last post by AWK June 21, 2005, 02:43:56 AM

1 Replies
75937 Views
Last post June 21, 2005, 02:43:56 AM
by AWK
is NH4+ Ammonium a strong or weak acid? and what is NH3 then?

Started by bugmento | Last post by nj_bartel July 31, 2009, 11:03:09 PM

1 Replies
75600 Views
Last post July 31, 2009, 11:03:09 PM
by nj_bartel
NH3 and CH3COOH Neutralization Reaction: Completion?

Started by no_audio | Last post by Dan July 11, 2011, 03:42:35 AM

2 Replies
75280 Views
Last post July 11, 2011, 03:42:35 AM
by Dan
Help calculating molarity for 10X PBS

Started by merlinthewitch | Last post by baseball07 February 05, 2010, 10:32:01 AM

8 Replies
68524 Views
Last post February 05, 2010, 10:32:01 AM
by baseball07
Storing Acetone

Started by razorm | Last post by jdurg May 09, 2005, 05:00:18 PM

13 Replies
68169 Views
Last post May 09, 2005, 05:00:18 PM
by jdurg
Sponsored Links

 

Normal Topic
Hot Topic (More than 5 replies)
Very Hot Topic (More than 10 replies)

Locked Topic
Sticky Topic
Poll