CHEMISTRY COMMUNITY

Abigail Carter 4G

How can oxalate (C2O4) be a chelating ligand? Is it become the oxygens can attach in multiple places?

Abigail Carter 4G

How can you tell if AlCl3 and Cu(NO3)2 is acidic (pH <7) or basic (pH>7)?

Abigail Carter 4G

Are there any exceptions where ligands have 4 or 5 binding sites?

Abigail Carter 4G

Should we memorize all of the anionic ligands (formulas and names) or will we get some of them on the test?

Abigail Carter 4G

How would you draw the lewis structure for [HgF2(OH2)2]+?

Abigail Carter 4G

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?

Abigail Carter 4G

When you are writing the name out from a given formula should you always include the oxidation number at the end in roman numerals?

Abigail Carter 4G

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?

Abigail Carter 4G

Do you add an O to the end of every anion name or are there some exceptions?

Abigail Carter 4G

How do you figure out if something forms a chelating complex?

Abigail Carter 4G

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?

Abigail Carter 4G

What is the difference between tm complex, organometallic complex and coordination compound, if any?

Abigail Carter 4G

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(...

Abigail Carter 4G

How do CH3Cl and CHCl3 have dipole-dipole interactions?

Abigail Carter 4G

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?

Abigail Carter 4G

What is the periodic trend for ionic character/bonding?

Abigail Carter 4G

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.

Abigail Carter 4G

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?

Abigail Carter 4G

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.

Abigail Carter 4G

What is the significance of calculating the boiling point of a compound and then the differences between two boiling points of two different compounds?

Abigail Carter 4G

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?

Abigail Carter 4G

What is an example of a question where we would use the interaction potential energy equation?

Abigail Carter 4G

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?

Abigail Carter 4G

When do you calculate a dipole moment? How do you know if a compound has a dipole moment?

Abigail Carter 4G

Does anyone know how much we should know about the factors that affect energy of many-electron atoms for the midterm?

Abigail Carter 4G

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?

Abigail Carter 4G

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?

Abigail Carter 4G

How do you solve for the uncertainty in position (delta X)?

Abigail Carter 4G

What does the H or hamiltonian mean in schrodinger's equation? Is it an actually constant?

Abigail Carter 4G

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?

Abigail Carter 4G

How do you figure out how many lone pairs each molecule has when you are drawing a lewis structure?

Abigail Carter 4G

Why are s-block metals typically more reactive than p-block metals?

How do you figure out how reactive a block of metals are?

Abigail Carter 4G

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?

Abigail Carter 4G

Can someone explain to me what resonance structures are again and how to determine if a structure is a resonance structure?

Abigail Carter 4G

When do you write x,y,z when you are writing electron configurations?

Abigail Carter 4G

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...

Abigail Carter 4G

How are electrons parallel and/or paired? Is there something that one can solve to figure it out?

Abigail Carter 4G

When would you use this equation?

wave function^2 = e-p distribution

Abigail Carter 4G

What is the Stern and Gerlach experiment and what is its relation and importance to quantum numbers?

Abigail Carter 4G

what does it mean for p- and d- orbitals to have nodal plane?

Abigail Carter 4G

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?

Abigail Carter 4G

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?

Abigail Carter 4G

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?

Abigail Carter 4G

When exactly do you use this equation? Could someone give me an example?

Abigail Carter 4G

Why is this equation negative? Does it have something to do with the electrons having lower energy?

Abigail Carter 4G

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...

Abigail Carter 4G

When do some of the less common SI units (ex. giga, mega, mili, nano, pico) come in handy/are more used?

Abigail Carter 4G

What are the most important equations used in quantum mechanics?

Abigail Carter 4G

Does anyone know what equations/information will be on the sheet that we get for the tests?

Abigail Carter 4G

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...

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