Search found 10 matches

by Lily_Dermendjian_2B
Sat Mar 18, 2017 10:10 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7582
Views: 1015295

Re: Post All Chemistry Jokes Here

Organic chemistry is difficult. Those who study it have alkynes of trouble.
by Lily_Dermendjian_2B
Fri Mar 10, 2017 1:11 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7582
Views: 1015295

Re: Post All Chemistry Jokes Here

Q: What is the chemical formula for "banana"?
A: BaNa2
by Lily_Dermendjian_2B
Sun Mar 05, 2017 9:11 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7582
Views: 1015295

Re: Post All Chemistry Jokes Here

periodic-table-150x150.jpg
periodic-table-150x150.jpg (8.48 KiB) Viewed 5926 times
by Lily_Dermendjian_2B
Mon Feb 27, 2017 11:58 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7582
Views: 1015295

Re: Post All Chemistry Jokes Here

imgres.png
imgres.png (4.19 KiB) Viewed 8414 times
by Lily_Dermendjian_2B
Sun Feb 12, 2017 10:21 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Problem 14.11d
Replies: 1
Views: 238

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?
by Lily_Dermendjian_2B
Sun Jan 29, 2017 11:25 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 1 Preparation Answers
Replies: 130
Views: 13715

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*...
by Lily_Dermendjian_2B
Sun Jan 22, 2017 4:25 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: 8.49
Replies: 3
Views: 515

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.
by Lily_Dermendjian_2B
Sun Jan 15, 2017 7:16 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7582
Views: 1015295

Re: Post All Chemistry Jokes Here

What do you call a fish made of two sodium atoms?

2Na
by Lily_Dermendjian_2B
Wed Sep 28, 2016 8:21 pm
Forum: General Science Questions
Topic: units
Replies: 2
Views: 619

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.

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