CHEMISTRY COMMUNITY

VGonzalez

Is Pka something we will have to calculate or will it be given?

VGonzalez

Can someone please explain how the naming reflects the oxidation number?

VGonzalez

How do you know if something will form a ligand and if it will be mono-,bi-, and tri- dente?

VGonzalez

When it says to write the proton transfer equilibria in an aqueous solution does that just mean water?

VGonzalez

What exactly is a chelating complex and how can you tell if an isomer can form one?

VGonzalez

Does anyone have any tips/mnemonic devices on remembering the difference between a Lewis acid/base and a Bronsted acid/base?

VGonzalez

How do you know how many pi and sigma bonds are present based on a compound's hybridization?

VGonzalez

How from diagram pictures, are we able tell what is polar and non polar and what compound has the greatest dipole moment?

VGonzalez

In today's lecture, Dr. Lavelle talked about being able to tell oxidation states. How can you tell the oxidation state from the # of ligands or the coordination #?

VGonzalez

Will we be asked for bond angles on shapes like trigonal pyramidal? Should we just memorize the generic angles of 109.5?

VGonzalez

Q: Below are ball-and-stick models of two molecules. In each case, indicate whether there must be, may be, or cannot be one or more lone pairs of electrons on the central atom. 120° (a) 180° (b) How do you know if there can be lone pairs of electrons on the central atom? Wouldn't it be another shape...

VGonzalez

What is the VSPER Formula that homework questions 4.11, 4.13, 4.15 (6th edition) ask to write? Is it important to know?

VGonzalez

Since F is the most electronegative element, what is more electronegative: Oxygen or Chlorine?

VGonzalez

Will we actually be using the equation or is It just a reference?

VGonzalez

How do you decide what the center element will be to complete a Lewis Structure?

VGonzalez

Do the expectations to the octet rule follow the ionization rules? Like if an element has 4s3d will 4s ionize first or will 3d ionize first?

VGonzalez

Do we need to know how to calculate bond length for upcoming tests?

VGonzalez

In Monday's lecture we did an example with a nitrate ion. Dr. Lavelle wrote how many valence electrons there were in Nitrogen and Oxygen and then he wrote -1 charge. Why did he write the -1 charge? Is that the value we have to calculate with the formal charge equation?

VGonzalez

What exactly is electron affinity and what does it say about an element?

VGonzalez

How do you know from what orbital an electron will be lost in order to form a cation?

VGonzalez

How many (a) nodal planes, (b) radial nodes are there in a 3p-orbital?

Is there a way to tell how many nodal planes and radial nodes there are based on an electron state?
What exactly are radial nodes?

VGonzalez

Why is the probability of finding an electron at a nodal 0?

VGonzalez

Are we not allowed to use the Rydberg Equation at all? Do we need to know it for the upcoming test/quiz?

VGonzalez

In a previous posting from some time ago students said to answer parts b and c by multiplying the energy received in part a by the amount of atoms you get from the given masses. Why is this allowed? How do we know that multiplying the number of atoms by the energy will give the correct new energy?

VGonzalez

In Monday's notes we wrote that the description if light as photons explains the intensity profile of black body radiation but have yet to talk about it again. Are we supposed to know the concept/definition of black body radiation? Is there any importance or significance to black body radiation?

VGonzalez

Not sure if I am posting in the right section, but what are the standard units for frequency and wavelength given by the equations. The chart has a wavelength in nanometers and Dr. Lavelle did an example on Wednesday also with nanometers but I thought meters was standard.

VGonzalez

What does the phrase "The extent of the change in the electrical field at a given point decreases" really mean. Is it referring to the relation of energy to frequency?

VGonzalez

The problem asks for the mass percent composition of L-carritine, C7H15NO3. Does that just mean find the mass composition of each element?

VGonzalez

When do you know to double moles or multiply an answer to get the next whole number. In the lecture we had to multiply 1.33 by 3 but if a number is like 1.1 or 1.9 do we still have to or can we round it? Are there any general rules?

VGonzalez

In the class example involving solid calcium carbide to form ethyne gas Mr. Lavelle wrote that 1.56 moles of calcium carbide requires 3.12 moles of water. What does this mean? Is it just about getting to the closest whole number? Does it have any affect on solving the problem?

CHEMISTRY COMMUNITY

Search found 30 matches

Ka Calculations

Ch. 17 #29, 6th edition

Ch. 17#33, 6th edition

Ch. 12 #3; 6th edition

Ch. 17 #35; 6th edition

Lewis vs. Bronsted

Hybridization & Types of Bonds [ENDORSED]

Homework Question 4.29, 6th edition

Oxidation

Bond Angles

Homework Question 4.1 (6th edition)

VSEPR Formula

Electronegativity

Interaction Potential Energy

Mystery Element

Valence Electrons

Bond Length

Lecture 1 Example

Electron Affinty

Losing electrons to form cations

Homework Ch.2 Question 15, 6th Edition

Nodes/ Nodals

Rydberg Equation

Homework Ch. 1 Question 25; 6th Edition

The Importance of Black Body Radiation (?)

Question 9; 6th edition

Homework Question 3; 6th Edition

F5 (6TH EDITION)

When to double moles

Limiting Reactants