Search found 20 matches

by cassidy_herro_1L
Fri Mar 11, 2016 7:42 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8017
Views: 1402191

Re: Chemistry Jokes

What do you do with a sick Chemist?

If you can't helium, and you can't curium, then you might as well barium.
by cassidy_herro_1L
Wed Mar 02, 2016 2:08 pm
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Cis and Trans in Large Compounds
Replies: 2
Views: 398

Cis and Trans in Large Compounds

How can you tell if a complex is cis or trans when there are more than four carbons (like if there are nine, ten and so on)?
by cassidy_herro_1L
Wed Feb 24, 2016 9:16 am
Forum: *Amines
Topic: Ambident
Replies: 1
Views: 432


How does one go about determining/identifying an ambient nucleophile?
by cassidy_herro_1L
Mon Feb 22, 2016 9:02 am
Forum: *Electrophiles
Topic: Memory Tips
Replies: 8
Views: 1165

Memory Tips

Does anyone have a good memory tip to not confuse the difference between Electrophiles and Nucleophiles?
by cassidy_herro_1L
Thu Feb 11, 2016 6:56 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Arrhenius Equation
Replies: 1
Views: 295

Arrhenius Equation

Can the Arrhenius equation generate a curve on the graph? Why or Why not?
by cassidy_herro_1L
Wed Feb 03, 2016 6:11 pm
Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
Topic: Anode and Cathode
Replies: 1
Views: 429

Anode and Cathode

What are the importance of determining the anode and cathode? Is there a trick to remembering which is which if so what is it?
by cassidy_herro_1L
Fri Jan 29, 2016 8:30 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: Salt Bridge
Replies: 1
Views: 309

Salt Bridge

What is the importance of a salt bridge in electrochemistry?
by cassidy_herro_1L
Wed Jan 20, 2016 8:24 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Enthalpy and Entropy
Replies: 3
Views: 542

Enthalpy and Entropy

What is the difference between enthalpy and entropy and how are they related?
by cassidy_herro_1L
Thu Jan 14, 2016 10:21 am
Forum: Calculating Work of Expansion
Topic: Calculating Work under constant pressure
Replies: 1
Views: 379

Re: Calculating Work under constant pressure

but if pressure is constant, then P is constant and you can take P out of the integral tonmake w= -P(V_f - V_i) = -P[delta]V
by cassidy_herro_1L
Wed Jan 06, 2016 6:55 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Isothermal Expansion
Replies: 2
Views: 434

Isothermal Expansion

What does "isothermal expansion" mean and how does it accept a thermodynamics problem?
by cassidy_herro_1L
Tue Dec 01, 2015 2:06 pm
Forum: Naming
Topic: naming coordination compounds
Replies: 1
Views: 285

naming coordination compounds

I understand that when naming a compound, if the net charge is negative, the transition metal ends in -ate. However, if say a sodium was attached to the compound would the transition metal's name still end in -ate? If so, why?
by cassidy_herro_1L
Mon Nov 23, 2015 10:08 am
Forum: Identifying Acidic & Basic Salts
Topic: Identifying oxides as acidic, basic, amphoteric (12.17)
Replies: 1
Views: 433

Identifying oxides as acidic, basic, amphoteric (12.17)

In chapter 12 question 17 the question states:

States whether the following oxides are acidic, basic, or amphoteric: (a) BaO (b) SO_3 (c) As_2O_3 (d) Bi_2O_3

How are you suppose to determine whether it is acidic, basic, or amphoteric?
by cassidy_herro_1L
Tue Nov 17, 2015 4:50 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Binding sites for Coordinate Compounds
Replies: 1
Views: 321

Binding sites for Coordinate Compounds

How can you tell how many binding sites a ligand has?
by cassidy_herro_1L
Mon Nov 09, 2015 9:57 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Shape of Coordination Compounds
Replies: 1
Views: 296

Re: Shape of Coordination Compounds

All the ligands will be in the coordination sphere but not all the compounds have to be octahedral.
by cassidy_herro_1L
Thu Nov 05, 2015 7:12 pm
Forum: Lewis Structures
Topic: Organic Lewis structures
Replies: 1
Views: 329

Organic Lewis structures

when there is a pre-made organic lewis structure that doesn't show carbon and hydrogen atoms, how does one know how many carbon atoms are present and how many hydrogen atoms are present?
by cassidy_herro_1L
Mon Oct 26, 2015 10:00 am
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Dipole and Formal Charge
Replies: 1
Views: 1286

Dipole and Formal Charge

Does the formal charge affect the dipole moment? For example O[sub]3 formal charge is zero but one of the oxygen a charge is negative, is that why the compound is polar?
by cassidy_herro_1L
Thu Oct 22, 2015 9:00 am
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge in relation to Bonds
Replies: 1
Views: 346

Formal Charge in relation to Bonds

How do single, double, and triple bonds affect the formal charge?
by cassidy_herro_1L
Sat Oct 17, 2015 2:38 pm
Forum: Ionic & Covalent Bonds
Topic: Electronegativity
Replies: 1
Views: 361


If the electronegativity difference is right in-between 1.5 and 2, what type of bond would the molecule have?
by cassidy_herro_1L
Fri Oct 09, 2015 3:31 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Removing 2nd Electron
Replies: 2
Views: 510

Re: Removing 2nd Electron

Removing a second electron is harder than the first because a net positive charge has already been created. Therefore, the second electron you are trying to remove is being my tightly held by the atom due to the fact that there are more protons and electrons.
by cassidy_herro_1L
Sun Oct 04, 2015 5:27 pm
Forum: *Shrodinger Equation
Topic: Understand Equations
Replies: 1
Views: 353

Understand Equations

How does E=hv and c=v(lambda) turn into lambda=hc/E?

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