Search found 22 matches

by Katie_Ho_1M
Sat Mar 18, 2017 11:31 am
Forum: *Aldehydes
Topic: Names of certain functional groups
Replies: 2
Views: 611

Re: Names of certain functional groups

Going off of this general post, what is a phenol functional group and what does it look like?
by Katie_Ho_1M
Mon Mar 13, 2017 11:00 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7581
Views: 1013247

Re: Post All Chemistry Jokes Here

What is a chemist's dream car?

A Mercedes Benzene
by Katie_Ho_1M
Mon Mar 06, 2017 8:13 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 3 Winter 2017
Replies: 183
Views: 15867

Re: Quiz 3 Winter 2017

Would you ever use use neo- in IUPAC naming? If so, when and how? (please give an example)
by Katie_Ho_1M
Mon Mar 06, 2017 11:09 am
Forum: *Cycloalkanes
Topic: Combining IUPAC naming with Common naming
Replies: 1
Views: 303

Combining IUPAC naming with Common naming

When would you combine the two types of naming (IUPAC and common) especially with ISO- and tert-?
by Katie_Ho_1M
Mon Feb 27, 2017 11:37 am
Forum: *Electrophilic Addition
Topic: Relation between standard enthalpy of activation
Replies: 1
Views: 411

Relation between standard enthalpy of activation

What is the relationship between standard enthalpy of activation and activation energy in relation to standard Gibbs's Free energy of activation?
by Katie_Ho_1M
Mon Feb 20, 2017 3:13 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7581
Views: 1013247

Re: Post All Chemistry Jokes Here

You must be made of uranium and iodine because all I can see is U and I!
by Katie_Ho_1M
Tue Feb 14, 2017 10:52 am
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: Mass vs Positional Entropy
Replies: 1
Views: 325

Mass vs Positional Entropy

When would you use mass vs positional entropy when calculating the entropy of a molecule?
by Katie_Ho_1M
Mon Feb 06, 2017 11:24 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7581
Views: 1013247

Re: Post All Chemistry Jokes Here

What kind of dogs do chemists have?

Laboratory Retrievers
by Katie_Ho_1M
Sun Jan 29, 2017 4:00 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7581
Views: 1013247

Re: Post All Chemistry Jokes Here

What does one thermodynamic state function give?

It Gibbs free energy.
by Katie_Ho_1M
Sun Jan 29, 2017 3:46 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Heat Capacities Constant Pressure vs. Volume
Replies: 2
Views: 274

Heat Capacities Constant Pressure vs. Volume

Why are the heat capacities under constant pressure and constant volumes different? And will be need to be able to calculate them on a quiz using, for example Cp=5/2 R for monatomic ideal gasses at constant pressure?
by Katie_Ho_1M
Mon Jan 23, 2017 2:44 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7581
Views: 1013247

Re: Post All Chemistry Jokes Here

What do you call a clown who's in jail?


A silicon.
by Katie_Ho_1M
Sun Jan 15, 2017 10:18 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Enthalpy calculations
Replies: 1
Views: 192

Re: Enthalpy calculations

Enthalpy calculated is calculated at constant pressure, for the definition of enthalpy is the amount of heat released or absorbed at a constant pressure. So, the answer to your question would be yes.
by Katie_Ho_1M
Fri Dec 02, 2016 9:01 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Weak Acids and Bases with Transition Metals [ENDORSED]
Replies: 1
Views: 310

Weak Acids and Bases with Transition Metals [ENDORSED]

Why do the weak acids that contain transition metals bond with six H2O molecules initially?
This is shown in AlCl3 becoming Al(H20)6^3+, hw problem 12.69 part b. The solution manual shows this specifically for the compounds with transition metals. But why?
by Katie_Ho_1M
Sun Nov 27, 2016 4:28 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7581
Views: 1013247

Re: Post All Chemistry Jokes Here

Chemistry is definitely not Bohr-ing.
by Katie_Ho_1M
Mon Nov 21, 2016 3:07 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Kp and Kc
Replies: 1
Views: 299

Re: Kp and Kc

The only difference between Kp and Kc is that one refers to the pressure of the element, in gas phase, and the other is the concentration of the element in a given solution. To tell the difference, Kc is usually shown in brackets. The difference in the values depend on the relative pressures/concent...
by Katie_Ho_1M
Sat Nov 12, 2016 10:17 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Cis- versus Trans-
Replies: 2
Views: 344

Re: Cis- versus Trans-

I believe that the difference between whether or not the molecule or element is side by side or opposite each other is how they enable bonding between other molecules. The different positions would allow the molecule to bind to, say proteins, differently if they are orientated differently, and their...
by Katie_Ho_1M
Sun Oct 30, 2016 3:08 pm
Forum: Empirical & Molecular Formulas
Topic: Mass % Composition
Replies: 3
Views: 2237

Mass % Composition

Is it necessary to calculate the mass % composition if given the grams of each element in a compound? I found that if you skip that step and go directly to converting grams into moles, you would still end up with the same ratios and thus the same answer. Would we have to show mass % comp on the midt...
by Katie_Ho_1M
Sat Oct 29, 2016 4:53 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Determine polarization
Replies: 1
Views: 239

Re: Determine polarization

If you draw out the dipole moments for this compound, you'll find that they do not cancel out, for the dipoles should point from the H towards the C and from the C to the N. These vectors are not direct opposites from each other so they will not cancel out and you will get resultant vectors. You can...
by Katie_Ho_1M
Sun Oct 23, 2016 9:00 pm
Forum: Octet Exceptions
Topic: Biradicals
Replies: 1
Views: 355

Biradicals

I don't quite understand how biradicals can exist. Why don't the two lone electrons just join and become a pair? How do biradicals play a role in the sharing of electrons and bonding of elements?
by Katie_Ho_1M
Sat Oct 15, 2016 11:10 pm
Forum: Resonance Structures
Topic: Electrons in Resonance [ENDORSED]
Replies: 4
Views: 452

Electrons in Resonance [ENDORSED]

When there is resonance in a compound, do the electrons travel around to create those different bonds or is it in a state of somewhere in between?
by Katie_Ho_1M
Sat Oct 08, 2016 4:44 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Orientation of the Orbitals
Replies: 3
Views: 411

Re: Orientation of the Orbitals

I believe that the orbitals do overlap, for they are predictions of where the electron may be, which could be the same in the different orientations of, for example, the p orbitals. In addition, since the electrons are not particles, even if the orbitals overlap, they wouldn't collide. Please correc...
by Katie_Ho_1M
Fri Sep 30, 2016 4:42 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Empirical Equations
Replies: 1
Views: 269

Empirical Equations

How would we be able to get the empirical equations of the emissions of elements other than hydrogen? Would En=-hR/n^2 still work in cases other than hydrogen?

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