CHEMISTRY COMMUNITY

Ayush Ray 1I

Which is the stronger acid and why

Ayush Ray 1I

The amino acid histidine binds to the heme complex iron to form myoglobin. How many O2 molecules can myoglobin bind? How many myoglobins form a hemoglobin

Ayush Ray 1I

Can someone explain what determines if a ligand is cheating or not. I’m still confused.

Ayush Ray 1I

Did Dr. Lavelle mention that we don’t have to review ICE tables for the final exam?

Ayush Ray 1I

A careless laboratory technician wants to prepare 200.0 mL of a 0.025 m HCl(aq) solution but uses a volumetric flask of vol- ume 250.0 mL by mistake. (a) What would the pH of the desired solution have been? (b) What will be the actual pH of the solution as prepared?

Ayush Ray 1I

State whether the following oxides are acidic, basic, or amphoteric:
(a) BaO
(b) SO3
(c) As2O3
(d) Bi2O3

Ayush Ray 1I

Write the chemical equations of the two proton transfer equilibria that demonstrate the amphiprotic character of
(a) HCO3-
(b) HPO42-
Identify the conjugate acid-base pairs in each case

Ayush Ray 1I

Also, how many questions is the final going to be?

Ayush Ray 1I

When will we be done covering topics for the final in lecture?

Ayush Ray 1I

When is the final exam and how long is it supposed to be?

Ayush Ray 1I

With the help of Table 9C.1, determine the coordination number of the metal ion in each of the following complexes:
(a) [NiCl4]2–
(b) [Ag(NH3)2]+
(c) [PtCl2(en)2]2+
(d) [Cr(edta)]-

Ayush Ray 1I

Name each of the following complex ions and identify the oxidation number of the metal:
(a) [Fe(CN)6]4-; (b) [Co(NH3)6]3+;(c) [Co(CN)5(OH2)]2-; (d) [Co(NH3)5(SO4)]+.

Ayush Ray 1I

Which interaction is stronger? Dipole-dipole in the solid phase or dipole-dipole in the gas phase?

Ayush Ray 1I

What exactly is an induced dipole and what is the difference between an induced dipole and dipole-dipole?

Ayush Ray 1I

Can somebody please explain why NaCl has a higher melting point than HCl

Ayush Ray 1I

All of 2E and 2F. Some concepts from 2D

Ayush Ray 1I

What is a terminal atom?

Ayush Ray 1I

What is the bond angle for the central atom of (CH3)2Be?

Ayush Ray 1I

Below are ball-and-stick models of two molecules. In each case, indicate whether there must be, maybe, or cannot be one or more lone pairs of electrons on the central atom. Both molecules consist of 3 atoms. The first molecule has a bond angle of 120 degrees between the central atom and the other tw...

Ayush Ray 1I

What topics will test 2 cover? Also, will it cover topics before the midterm?

Ayush Ray 1I

What exactly is autoprotolysis? Also, can someone please explain what the autoprotolysis constant represents.

Ayush Ray 1I

What does it mean for something to be amphiprotic? Also, what is the difference between amphiprotic and amphoteric?

Ayush Ray 1I

Write the chemical equations of the two proton transfer
equilibria that demonstrate the amphiprotic character of (a) HCO3-; (b) HPO4 2-
Identify the conjugate acid–base pairs in each case.

Ayush Ray 1I

My midterm grade

Ayush Ray 1I

Are there any resources we can use to practice concept questions for the midterm (not problems).

Ayush Ray 1I

What are the exceptions to the trend of ionization energy in the periodic table?

Ayush Ray 1I

For lecture tomorrow, are we going over review for the midterm or is Dr. Lavelle starting new material.

Ayush Ray 1I

Is Lyndon having another workshop or review session before the midterm?

Ayush Ray 1I

Will we have to have a grasp of resonance hybrids and be able to draw those lewis structures for the midterm? (Ex: Benzene)

Ayush Ray 1I

For the midterm, will we have to write chemical formulas from the name of the compound or will the formula be given already?

Ayush Ray 1I

Has Lavelle mentioned how long the midterm is supposed to be

Ayush Ray 1I

Alright. Thank You so much. I'm debating whether I should spend the $64 or not.

Ayush Ray 1I

Do I have to pay for Sapling? The website says I have to pay $64 to enroll in the "Homework Course"

Ayush Ray 1I

Outside of the review sessions, does Lavelle offer any study guides or practice tests prior to the midterm?

Ayush Ray 1I

Can somebody please explain how we're supposed to figure out how many valence electrons are in d-block elements

Ayush Ray 1I

Why is that

Ayush Ray 1I

Which of the following increase when the electron in a hydrogen atom undergoes a transition from the 1s-orbital to a 2p-orbital?
(a) Energy of the electron.
(b) Value of n.
(c) Value of l.
(d) Radius of the atom.

Ayush Ray 1I

Oh, alright. Thank you so much.

Ayush Ray 1I

The velocity of an electron that is emitted from a
metallic surface by a photon is 3.63 x 10^3 km/s
(a) What is the wavelength of the ejected electron?

I'm confused because the solution manual says to use de Broglie's equation. However, there is no mass given in the question.

Ayush Ray 1I

So for future tests and exams, should we use the second method only?

Ayush Ray 1I

When Dr. Lavelle was writing the electron configuration for Carbon, he changed it from 1s^2 2s^2 2p^2 to1s^2 2s^2 2px^1 2py^1. Why did he make the change? I missed when he talked about it.

Ayush Ray 1I

What does "The extent of the change in the electrical field" mean exactly?

Ayush Ray 1I

Can someone please further explain what Schrodinger's Equation is used for exactly. I'm still unsure.

Ayush Ray 1I

Light behaves as both a wave and a particle. Those particles are represented as photons.

Ayush Ray 1I

Does Dr. Lavelle recommend we watch and take notes on the modules before going forward with the HW?

Ayush Ray 1I

Does anybody know when we are supposed to get our first tests back and graded? Is it supposed to be in our discussion this week?

Ayush Ray 1I

I have the 6th edition, and everything looks the same to me when compared to the 7th edition.

Ayush Ray 1I

Thank You so much for posting this. I've been stressing a lot recently, and this really cleared things up for me.

Ayush Ray 1I

Our TA said we should memorize diatomic ions.

Ayush Ray 1I

Tyler Dewitt posts some great videos on YouTube if you're struggling to grasp some specific concepts.

Ayush Ray 1I

Yes you include the molar mass of the hydrate. In this case you would include the 5 moles of H2O making the total molar mass to be 249.6 g/mol

Ayush Ray 1I

Alright. I got it. Thank You.

Ayush Ray 1I

The molar mass of the metal hydroxide M(OH)2 is 74.10 g*mol^-1. What is the molar mass of the sulfide of this metal?

Search found 53 matches