CHEMISTRY COMMUNITY

Maddie Hong 1I

Basically, metal oxides react with water to form strong bases. Many nonmetal oxides react after to form acids. Amphoteric compounds are found between the metal oxides and the nonmetal oxides of the period table along the diagonal band of the metalloids. These amphoteric compounds will include Be, Al...

Maddie Hong 1I

To add on, the acid will break down into H+ and CH3COO-. I don't think the other H+'s can be donated since they are part of the acetate ion, CH3COO-

Maddie Hong 1I

This is because a single (en) is a bidentate, so it attaches to the central atom at two separate place.
Also the coordination number would be 6. Both (en)'s have two attachment sites and each Br has 1, so 4+2=6 for the coordination number and an octahedral shape.

Maddie Hong 1I

For Kc and when comparing it with Q, the values to calculate must be in mol/L since Kc is the equilibrium constant based off of concentration.

Maddie Hong 1I

Generally, Kc is used for (aq) and Kp is used for gases.

Maddie Hong 1I

The equilibrium constant of a reaction is the inverse of the equilibrium constant of its reverse reaction and vice versa. For example, aA + bB <-> cC + dD K of original reaction= ([C]^c [D]^d) / [A]^a [B]^b cC + dD <-> aA + bB K of reverse reaction= ([A]^a [B]^b) / [C]^c [D]^d This equation is equiv...

Maddie Hong 1I

Also, I would note that water is sometimes written as OH2 when in the brackets, because the oxygen of the water is what connects it to the central atom.

Maddie Hong 1I

Just to clarify, although CO2 is a nonpolar molecule, it contains polar bonds. This is because in an individual C-O bond, the dipole moment is not 0 and O is more electronegative. It is a non polar molecule, however because overall the dipole moments of both polar bonds cancel.

Maddie Hong 1I

Just to add, 109.5 degrees is only for tetrahedral molecules with no lone pairs!

Maddie Hong 1I

When I finish drawing my Lewis structure, I count the electrons to make sure it matches the number of electrons i should be using. If the number of electrons I used is higher and all the atoms have octets around them this generally means you should add a double or triple bond somewhere. Of course th...

Maddie Hong 1I

A Lewis acid is an electron acceptor and a Lewis base is an electron donor. So the Lewis acid gives an electron to a Lewis base, which is why when the two bond together, they form coordinate covalent bonds.
I think Professor Lavelle said we would come back to this later in the class though.

Maddie Hong 1I

Yes, you don't have to worry about the f orbitals until you reach lanthanum and all the elements after lanthanum

Maddie Hong 1I

The electron configuration is written in order of increasing n, even though that may not be the order that the shells are filled.
So the [Ar]3d^10 4s^2 4p^1 is the correct one

Maddie Hong 1I

The f-orbital starts with element 57, since the f-block is the lanthanides and actinides. For example, the electron configuration of La (lanthanum) is [Xe] 5d^1 6s^2. The electron configuration for Hf (hafnium) is [Xe] 4f^14 5d^2 6s^2

Hope this helps!

Maddie Hong 1I

Effective nuclear charge refers to the "net nuclear charge after taking into account the shielding caused by other electrons in the atom," according to the textbook. So the more electrons, the smaller the effective nuclear charge. With more electrons in the atom, each individual electron f...

Maddie Hong 1I

For nitrogen in its ground state, all the arrows in the p orbital should be facing up. But if there were a few more electrons like in fluorine which has 9, then you would finish filling in the subshells with down arrows so that px and py have both an up facing and down facing arrow, while pz has one...

Maddie Hong 1I

The spin helps distinguish which electron in a pair is spinning clockwise and which is spinning counterclockwise. Two electrons that are paired together will have the same n, l, and ml numbers but different ms/spins.

Maddie Hong 1I

I think it would be helpful to know that ultraviolet light is next to visible light on the 400 nm side and infrared light is next to visible light on the 700 nm side.

Maddie Hong 1I

My TA said we should at least know that visible light has wavelengths from about 400 nm to 700 nm.

Maddie Hong 1I

Just to add on, only base your sig figs off of values/measurments the problem gives you, not on conversion factors or any other numbers you introduce into the problem yourself.

Maddie Hong 1I

If you're asking about 3 sig figs for the 1795.507, then it would be 1.80x10^3.

CHEMISTRY COMMUNITY

Search found 21 matches

Re: 12.17

Re: CH3COOH

Re: Shape of [Co(en)2(Br)2]

Re: Units for K and Q [ENDORSED]

Re: Reaction constant

Re: Constant Calculation

Re: Diaqaua

Re: different types of bonds

Re: 109.5 degrees

Re: When to use a double bond or triple bond [ENDORSED]

Re: Lewis Acids and Bases

Re: F orbitals

Re: electron configuration

Re: f-orbitals

Re: Subshell Qualities

Re: Spin of parallel electrons

Re: Electron Spin

Re: Wavelengths and Frequency of Electromagnetic Radiation [ENDORSED]

Re: Series

Re: Intergers and Exact Numbers- Sig Figs [ENDORSED]

Re: 3 Sig Figs 1795.507? [ENDORSED]