Search found 10 matches
- Sat Mar 18, 2017 10:10 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3634626
Re: Post All Chemistry Jokes Here
Organic chemistry is difficult. Those who study it have alkynes of trouble.
- Fri Mar 10, 2017 1:11 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3634626
Re: Post All Chemistry Jokes Here
Q: What is the chemical formula for "banana"?
A: BaNa2
A: BaNa2
- Sun Mar 05, 2017 9:11 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3634626
Re: Post All Chemistry Jokes Here
- periodic-table-150x150.jpg (8.48 KiB) Viewed 17926 times
- Mon Feb 27, 2017 11:58 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3634626
Re: Post All Chemistry Jokes Here
- imgres.png (4.19 KiB) Viewed 18324 times
- Fri Feb 24, 2017 10:44 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3634626
- Sun Feb 12, 2017 10:21 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Problem 14.11d
- Replies: 1
- Views: 446
Problem 14.11d
Write the half-reactions and the balanced equation for the cell reaction for each of the following galvanic cells:
(b) C(gr)|H2(g)|H+(aq)||Cl-(aq)|Cl2(g)|Pt(s)
In the solutions manual, they seem to balance the cathode reaction basically and the anode reaction acidically. Why did they do that?
(b) C(gr)|H2(g)|H+(aq)||Cl-(aq)|Cl2(g)|Pt(s)
In the solutions manual, they seem to balance the cathode reaction basically and the anode reaction acidically. Why did they do that?
- Sun Jan 29, 2017 11:25 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 1 Preparation Answers
- Replies: 130
- Views: 25692
Re: Quiz 1 Preparation Answers
Can someone please explain how I should approach #11? You divide 49.7 by the molar mass of PbO to get the number of moles, then multiply that by the deltaH to get the heat released by the reaction of that amount of PbO. You then use q=mCdeltaT and solve for m. 49.7g/(223.2g/mol)=0.223mol; 0.223mol*...
- Sun Jan 22, 2017 4:25 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: 8.49
- Replies: 3
- Views: 981
Re: 8.49
You use the equation deltaU=q+w. You can use the given deltaH for q, and use the equation w=-PdeltaV=-deltanRT to find w. This gives you deltaU=q+w=deltaH-PdeltaV=-318kJ-2.48kJ=-320kJ.
- Sun Jan 15, 2017 7:16 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3634626
Re: Post All Chemistry Jokes Here
What do you call a fish made of two sodium atoms?
2Na
2Na
- Wed Sep 28, 2016 8:21 pm
- Forum: General Science Questions
- Topic: units
- Replies: 2
- Views: 931
Re: units
It should be fine to leave the answer in either unit as long as you label it correctly and use the right number of sig figs. You can leave the answer as, say, either 3.0 L or 3.0 x 10^3 mL.