CHEMISTRY COMMUNITY

705088777

A ligand is an ion or molecule attached to a metal atom by coordinate bonding.

705088777

There are two complementary definitions of acids and bases that are important: the Bronsted (or Bronsted-Lowry) definition: an acid is a proton (H+ ion) donor, and a base is a proton acceptor; the Lewis definition: an acid is an electron acceptor, and a base is an electron donor

705088777

Also, if it is a weak bond then more H+ ions will go into water and therefore its a strong acid

705088777

How do you write/find the hybridization of a lone pair?

705088777

is bond order on the test?

705088777

Can someone explain how to write out the hybridization. in the textbook it would be like : pi(H1s,C2sp2). What does that mean?

705088777

How do you know if a molecule has a delocalized pi bond?

705088777

Can someone explain dipole moment and how we can tell if a molecule has it?

705088777

To show the conservation of mass.

705088777

Can someone explain hybridization? I was really confused about what it is and how to do it?

705088777

Tuesday and Wednesday discussions still take place this week

705088777

the more ionic, the higher the boiling point

705088777

Polarizing power is used to describe cations, which pull electrons away from the anions. Smaller, more positive cations would pull electrons more strongly, so they have more polarizing power (ex. Mg 2+ is small and positive so it has more polarizing power).

705088777

If there are lone pair electrons it will make the degrees slight less than the usual value.

705088777

Is it because the bonds average out and almost move around?

705088777

What homework do we do for discussion since we just took a midterm?

705088777

If we have a chem discussion that day will it be canceled too?

705088777

I think Dr. Lavelle is going to announce it in class or send out an email.

705088777

The sessions on Sunday with the UA are very helpful too.

705088777

How do you write the electron configurations for ions? like [F]-

705088777

How do you know is the spin is + 1/2 or -1/2 or both?

705088777

Can someone explain how to do quantum numbers (n,l,ml,ms)??

705088777

Do we need to know this for the test?

705088777

What is the concept behind the Equation?

705088777

can someone describe what a wave function is and it's probability density? do we need to know it for the test?

705088777

Just think of problems in physics where an object is at rest. This means the velocity=0 because the object is not moving. So in this case, it means the mass of electrons when nothing is moving.

705088777

I would just understand the facts that came from the experiment. you should probably know what is in the textbook.

705088777

Think of threshold as the minimum grade you need on a test to get an A in the class. That's what the UA described it as.

705088777

How do I find the concentration of ions in a solution? Do I need to write a net ionic equations?
Question: A solution is prepared by dissolving .500g KCL, .500g K2S, and .500g K3PO4 in 500. ml of water. What is the concentration in the final solution of (a)potassium ions; (b) sulfide ions?

705088777

how are we supposed to determine the molecular formula of caffeine without looking it up?

705088777

A metal M forms an oxide with the formula M20, for which the mass percentage of the metal is 88.8%. (a) What is the molar mass of the metal? (b)Write the name of the compound.

705088777

How do I find the molar mass of the metal? I did 2x/2x+16 = .888 and solved for x. I got x as 63.43g but that is wrong. Please let me know what I did wrong!

705088777

I don't understand how to set up an equation for this exercise. Do I find the molar ratio between the two atoms?

705088777

because we need to compare molar ratios.

705088777

I have the same issue! it is so confusing.

705088777

yes they are asking for the empirical formula

705088777

A solution is prepared by dissolving 55.1 g of KCl in approximately 75 mL of water and then adding water to a final volume of 125 mL. What is the molarity of KCl(aq) in this solution? I converted the KCL grams into moles. then I multiplied that by .075L and finally divided by .125L. I'm not getting ...

CHEMISTRY COMMUNITY

Search found 37 matches

Re: what is a ligand?

Re: Lewis v. Bronsted

Re: Comparing Weak vs. Strong Acids and Bases

Lone pairs

Bond Order

Writing out

pi bond

Dipole Moment

Re: Why do we balance chemical equations?

Hybridization

Re: Discussion

Re: Boiling Point

Re: Polarizing Power

Re: Bond Angles

Re: Bond Lengths

HW for discussion

Re: Thanksgiving Wednesday

Re: midterm

Re: Midterm studying

configuration for ions

spin

Quantum Numbers

Re: Nodal surfaces

Re: Test 2 and Shrodinger Equation

Wavefunction

Re: Rest Mass?

Re: Wave Model

Re: Threshold energy [ENDORSED]

G.21

M19

Re: F.7

F.7

E3

Re: Balancing Chemical Equations

Re: Fundamentals E 19- 7th Edition

Re: HW 1 Problem F.9

Module question