Search found 50 matches
- Sat Dec 07, 2019 1:33 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: [Co(OH)2C2O4]-
- Replies: 1
- Views: 238
[Co(OH)2C2O4]-
How can oxalate (C2O4) be a chelating ligand? Is it become the oxygens can attach in multiple places?
- Fri Dec 06, 2019 5:21 pm
- Forum: Identifying Acidic & Basic Salts
- Topic: AlCl3 & Cu(NO3)2
- Replies: 3
- Views: 407
AlCl3 & Cu(NO3)2
How can you tell if AlCl3 and Cu(NO3)2 is acidic (pH <7) or basic (pH>7)?
- Sun Dec 01, 2019 6:50 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Ligand Binding Sites
- Replies: 1
- Views: 139
Ligand Binding Sites
Are there any exceptions where ligands have 4 or 5 binding sites?
- Sun Dec 01, 2019 6:47 pm
- Forum: Naming
- Topic: Anionic Ligands
- Replies: 1
- Views: 171
Anionic Ligands
Should we memorize all of the anionic ligands (formulas and names) or will we get some of them on the test?
- Sun Dec 01, 2019 6:43 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Random Example
- Replies: 1
- Views: 155
Random Example
How would you draw the lewis structure for [HgF2(OH2)2]+?
- Sun Dec 01, 2019 4:30 pm
- Forum: Naming
- Topic: Cis & Trans
- Replies: 3
- Views: 223
Cis & Trans
I understand that cis means the ligands are on the same side, whereas trans means they are opposite each other but do we have to include these prefixes when we are writing the names?
- Sun Dec 01, 2019 4:26 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Oxidation Number
- Replies: 9
- Views: 731
Oxidation Number
When you are writing the name out from a given formula should you always include the oxidation number at the end in roman numerals?
- Sun Nov 24, 2019 10:51 pm
- Forum: Naming
- Topic: Roman Numerals
- Replies: 3
- Views: 304
Roman Numerals
I understand that the Tm cation name is the roman numeral but how do you decipher what roman numeral you write? Basically, how do you figure out what the Tm cation name is?
adding O
Do you add an O to the end of every anion name or are there some exceptions?
- Sun Nov 24, 2019 10:00 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Chelating complexes
- Replies: 1
- Views: 178
Chelating complexes
How do you figure out if something forms a chelating complex?
- Sun Nov 24, 2019 9:53 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: ligand bonding sites
- Replies: 2
- Views: 142
ligand bonding sites
What does it mean for a ligand to bind at multiple sites? (ex. 1, 2, 3, 6) Does that mean there are x number of molecules that are ligands?
- Sun Nov 24, 2019 9:51 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Coordination compound
- Replies: 5
- Views: 173
Coordination compound
What is the difference between tm complex, organometallic complex and coordination compound, if any?
- Mon Nov 18, 2019 12:27 am
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: 3F.19
- Replies: 2
- Views: 230
3F.19
Account for the following observations in terms of the type and strength of intermolecular forces. (a) The melting point of solid xenon is -112C and that of solid argon is -189C. (b) The vapor pressure of diethyl ether (C2H5OC2H5) is greater than that of water. (c) The boiling point of pentane, CH3(...
- Sun Nov 17, 2019 11:34 pm
- Forum: Dipole Moments
- Topic: CH3Cl & CHCl3
- Replies: 2
- Views: 459
CH3Cl & CHCl3
How do CH3Cl and CHCl3 have dipole-dipole interactions?
- Sun Nov 17, 2019 11:00 pm
- Forum: Bond Lengths & Energies
- Topic: 2D. 19
- Replies: 4
- Views: 444
2D. 19
Use the covalent radii in Fig. 2D.11 to calculate the bond lengths in the following molecules. Account for the trends in your calculated values: (a) CF 4 ; (b) SiF 4 ; (c) SnF 4 .
How do you use the covalent radii to calculate bond lengths? Also is this something that could be on test 2?
How do you use the covalent radii to calculate bond lengths? Also is this something that could be on test 2?
- Sun Nov 17, 2019 10:34 pm
- Forum: Ionic & Covalent Bonds
- Topic: ionic bonding
- Replies: 2
- Views: 186
ionic bonding
What is the periodic trend for ionic character/bonding?
- Sun Nov 17, 2019 10:31 pm
- Forum: Ionic & Covalent Bonds
- Topic: 2D 3.
- Replies: 1
- Views: 139
2D 3.
Which of these compounds have bonds that are primarily ionic? BBr3 or BaBr2 or BeBr2
I know that BBr3 have covalent bonds but how do can you tell which of the other two compounds have more ionic bonds.
I know that BBr3 have covalent bonds but how do can you tell which of the other two compounds have more ionic bonds.
- Sun Nov 17, 2019 10:25 pm
- Forum: Bond Lengths & Energies
- Topic: Interaction Potential Energy
- Replies: 2
- Views: 257
Interaction Potential Energy
Does anyone know if the interaction potential energy equation will be on the test? If so, what is an example of a problem where you would have to use it?
- Sun Nov 17, 2019 10:05 pm
- Forum: Dipole Moments
- Topic: Dipole-Induced Dipole
- Replies: 1
- Views: 115
Dipole-Induced Dipole
What exactly is a dipole-induced dipole and what are some examples? I am confused on how you know if a compound has a dipole-induced dipole intermolecular force.
- Sun Nov 10, 2019 11:32 pm
- Forum: Bond Lengths & Energies
- Topic: Boiling Points
- Replies: 2
- Views: 188
Boiling Points
What is the significance of calculating the boiling point of a compound and then the differences between two boiling points of two different compounds?
- Sun Nov 10, 2019 11:29 pm
- Forum: Dipole Moments
- Topic: 3F.3
- Replies: 2
- Views: 160
3F.3
For which of the following molecules will dipole–dipole interactions be important: (a) CH4 (b) CH3Cl (c) CH2Cl2 (d) CHCl3 (e) CCl4?
How do you know if dipole-dipole interactions will be important for certain compounds?
How do you know if dipole-dipole interactions will be important for certain compounds?
- Sun Nov 10, 2019 11:23 pm
- Forum: Bond Lengths & Energies
- Topic: Interaction Potential Energy equation
- Replies: 7
- Views: 440
Interaction Potential Energy equation
What is an example of a question where we would use the interaction potential energy equation?
- Sun Nov 10, 2019 11:17 pm
- Forum: Dipole Moments
- Topic: Different types of attractive forces
- Replies: 2
- Views: 217
Different types of attractive forces
How do you distinguish between what compounds have what attractive forces? For example how do you tell what compounds have dipole-dipole and what have dipole-induced dipole etc?
- Sun Nov 10, 2019 11:15 pm
- Forum: Dipole Moments
- Topic: Dipole Moment
- Replies: 6
- Views: 314
Dipole Moment
When do you calculate a dipole moment? How do you know if a compound has a dipole moment?
- Sun Nov 03, 2019 10:34 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Factors affecting energy
- Replies: 1
- Views: 102
Factors affecting energy
Does anyone know how much we should know about the factors that affect energy of many-electron atoms for the midterm?
- Sun Nov 03, 2019 10:30 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: formal charge
- Replies: 7
- Views: 414
formal charge
When you are drawing lewis structures do you always need to solve for formal charge? Are there molecules that automatically do not have a formal charge and therefore don't need to solve the equation for?
- Sun Nov 03, 2019 10:22 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: formal charge
- Replies: 5
- Views: 348
formal charge
When you are drawing lewis structures do you always need to solve for formal charge? Are there molecules that automatically do not have a formal charge and therefore don't need to solve the equation for?
- Sun Nov 03, 2019 10:19 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Uncertainty in position
- Replies: 1
- Views: 99
Uncertainty in position
How do you solve for the uncertainty in position (delta X)?
- Sun Nov 03, 2019 9:49 pm
- Forum: *Shrodinger Equation
- Topic: Hamiltonian
- Replies: 4
- Views: 417
Hamiltonian
What does the H or hamiltonian mean in schrodinger's equation? Is it an actually constant?
- Sun Nov 03, 2019 8:50 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Electron Transitions
- Replies: 1
- Views: 102
Electron Transitions
En = -(hR/n^2)
I understand that this equation calculates electron transitions but I don't understand what that means.
On a test what is an example of an question that you need to use this equation for?
I understand that this equation calculates electron transitions but I don't understand what that means.
On a test what is an example of an question that you need to use this equation for?
- Sun Oct 27, 2019 8:03 pm
- Forum: Lewis Structures
- Topic: Lone Pairs
- Replies: 12
- Views: 538
Lone Pairs
How do you figure out how many lone pairs each molecule has when you are drawing a lewis structure?
- Sun Oct 27, 2019 8:02 pm
- Forum: Trends in The Periodic Table
- Topic: 1F.19
- Replies: 1
- Views: 72
1F.19
Why are s-block metals typically more reactive than p-block metals?
How do you figure out how reactive a block of metals are?
How do you figure out how reactive a block of metals are?
- Sun Oct 27, 2019 7:59 pm
- Forum: Trends in The Periodic Table
- Topic: 1F.5
- Replies: 1
- Views: 71
1F.5
Which member of each pair has the smaller first ionization energy: (a) Ca or Mg; (b) Mg or Na; (c) Al or Na?
How do you figure our the first ionization energy?
How do you figure our the first ionization energy?
- Sun Oct 27, 2019 7:54 pm
- Forum: Resonance Structures
- Topic: Resonance
- Replies: 5
- Views: 152
Resonance
Can someone explain to me what resonance structures are again and how to determine if a structure is a resonance structure?
- Sun Oct 27, 2019 7:43 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Electron configurations
- Replies: 3
- Views: 174
Electron configurations
When do you write x,y,z when you are writing electron configurations?
- Sun Oct 20, 2019 9:34 pm
- Forum: Photoelectric Effect
- Topic: 1B.3
- Replies: 3
- Views: 104
1B.3
1B.3 From the following list of observations, select the one that best supports the idea that electromagnetic radiation has the properties of particles. Explain your reasoning. (a) Black-body radiation. (b) Electron diffraction. (c) Atomic spectra. (d) The photoelectric effect. Can someone help me w...
- Sun Oct 20, 2019 9:30 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Paired & Parallel Electrons
- Replies: 4
- Views: 149
Paired & Parallel Electrons
How are electrons parallel and/or paired? Is there something that one can solve to figure it out?
- Sun Oct 20, 2019 9:28 pm
- Forum: *Shrodinger Equation
- Topic: wave function^2
- Replies: 1
- Views: 133
wave function^2
When would you use this equation?
wave function^2 = e-p distribution
wave function^2 = e-p distribution
- Sun Oct 20, 2019 9:19 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Stern & Gerlach Experiment
- Replies: 3
- Views: 221
Stern & Gerlach Experiment
What is the Stern and Gerlach experiment and what is its relation and importance to quantum numbers?
- Sun Oct 20, 2019 9:14 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: p- & d- orbitals
- Replies: 2
- Views: 103
p- & d- orbitals
what does it mean for p- and d- orbitals to have nodal plane?
- Sun Oct 13, 2019 10:59 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: 1B. 27
- Replies: 1
- Views: 99
1B. 27
A bowling ball of mass 8.00 kg is rolled down a bowling alley lane at 5.00 +/- 5.0 m.s-1. What is the minimum uncertainty in its position?
- Sun Oct 13, 2019 10:54 pm
- Forum: Properties of Electrons
- Topic: Energy/Light Levels
- Replies: 2
- Views: 76
Energy/Light Levels
If ultraviolet involves n=1, visible involves n=2 and infrared involves n=3 then what is the connection between light and n=4 and n=5?
- Sun Oct 13, 2019 10:52 pm
- Forum: Properties of Electrons
- Topic: Emission Spectrum
- Replies: 4
- Views: 132
Emission Spectrum
I remember that in lecture we talked about how the emission/line/atomic spectrum for H shows different groups of spectral lines. What does this mean exactly and what is its context in terms of the bigger picture?
- Sun Oct 13, 2019 10:46 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Indeterminacy Equation
- Replies: 5
- Views: 203
Indeterminacy Equation
When exactly do you use this equation? Could someone give me an example?
- Sun Oct 13, 2019 10:43 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: En=-hR/h2
- Replies: 1
- Views: 40
En=-hR/h2
Why is this equation negative? Does it have something to do with the electrons having lower energy?
- Sun Oct 06, 2019 11:30 pm
- Forum: Balancing Chemical Reactions
- Topic: H.25
- Replies: 3
- Views: 902
H.25
Phosphorus and oxygen react to form two different phosphorus oxides. The mass percentage of phosphorus in one of these oxides is 43.64%; in the other, it is 56.34%. (a) Write the empirical formula of each phosphorus oxide. (b) The molar mass of the former oxide is 283.33 g.mol and that of the latter...
- Sun Oct 06, 2019 11:25 pm
- Forum: SI Units, Unit Conversions
- Topic: Si Units
- Replies: 3
- Views: 178
Si Units
When do some of the less common SI units (ex. giga, mega, mili, nano, pico) come in handy/are more used?
- Sun Oct 06, 2019 11:18 pm
- Forum: Properties of Light
- Topic: Quantum Mechanics Equations
- Replies: 2
- Views: 75
Quantum Mechanics Equations
What are the most important equations used in quantum mechanics?
- Sun Oct 06, 2019 1:11 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Test Equation Sheet
- Replies: 8
- Views: 429
Test Equation Sheet
Does anyone know what equations/information will be on the sheet that we get for the tests?
- Sun Oct 06, 2019 11:52 am
- Forum: Empirical & Molecular Formulas
- Topic: L.39
- Replies: 1
- Views: 145
L.39
A 1.50-g sample of metallic tin was placed in a 26.45-g crucible and heated until all the tin had reacted with the oxygen in air to form an oxide. The crucible and product together were found to weigh 28.35 g. (a) What is the empirical formula of the oxide? (b) Write the name of the oxide. Can someo...