Why did the acid go to the gym?
To become a buffer solution.
Search found 11 matches
- Mon Mar 13, 2017 11:01 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3638498
- Sat Mar 11, 2017 8:33 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3638498
Re: Post All Chemistry Jokes Here
Q: What do chemists call a benzene ring with iron atoms replacing the carbon atoms?
A: A ferrous wheel.
A: A ferrous wheel.
- Wed Mar 01, 2017 11:48 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3638498
Re: Post All Chemistry Jokes Here
- orgchem.gif (8.88 KiB) Viewed 19096 times
- Mon Feb 20, 2017 7:29 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3638498
Re: Post All Chemistry Jokes Here
- chem joke.jpg (17.17 KiB) Viewed 19439 times
- Tue Feb 14, 2017 9:13 pm
- Forum: Phase Changes & Related Calculations
- Topic: Winter Midterm 2015 4&5 D
- Replies: 2
- Views: 629
Winter Midterm 2015 4&5 D
"In Potions class, Professor Snape wants to stump Harry with a challenging question, so he asks harry to calculate the entropy of vaporization for 1.0 mole of water at room temperature (298K). Harry thinks this task is impossible since water has a boiling point of 373K, but you know better. giv...
- Wed Feb 08, 2017 5:18 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3638498
- Mon Jan 30, 2017 7:02 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3638498
- Fri Jan 27, 2017 8:30 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Quiz 1 Prep #5
- Replies: 5
- Views: 2836
Re: Quiz 1 Prep #5
^^ Like said above, not sure if there was an error in the equation but it was not originally balanced therefore the original reaction should be: N2H4(l) + H2(g) -> 2NH3(g) once you balance it .From here, your equation has 2NH3 in the product side and your end reaction should match the original react...
- Wed Jan 25, 2017 10:09 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Quiz 1 Preparation, Question #4
- Replies: 1
- Views: 626
Re: Quiz 1 Preparation, Question #4
Hello,
Yes, your approach to this question is correct. The enthalpy of sublimation is equal to enthalpy of fusion + enthalpy of vaporization. Therefore, just substitute each enthalpy value into the equation and solve for enthalpy of vaporization. The answer should be 29.5 kJ/mol.
Yes, your approach to this question is correct. The enthalpy of sublimation is equal to enthalpy of fusion + enthalpy of vaporization. Therefore, just substitute each enthalpy value into the equation and solve for enthalpy of vaporization. The answer should be 29.5 kJ/mol.
- Sun Jan 22, 2017 5:22 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3638498
Re: Post All Chemistry Jokes Here
The Pope calls a conference at the Vatican. 6.022 x 10^23 priests attend. The name of the conference was named "Holy Mole-y."
- Sun Jan 15, 2017 8:18 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Hw question 8.57
- Replies: 3
- Views: 665
Re: Hw question 8.57
In this problem specifically, I believe you need to use Hess's Law because after balancing the equations of C2H2, C2H6 and H2 using combustion, one of the equations will be flipped/reversed in order to do cancellation. This reversed equation will result in a sign change of the enthalpy. (Ex: If chan...