CHEMISTRY COMMUNITY

Chelsey_Schaum1H

Halides, alcohols, ethers, ketones, carboxylic acids, aldehydes, and amines.

Chelsey_Schaum1H

If a cycloalkene or alkyne or a normal Alkene or alkyne has multiple double or triple bonds, in the naming do you put a prefix indicating how many double or triple bonds there are? Such as 1,4- dialkene, or just 1,4- alkene?

Chelsey_Schaum1H

Is the catalyst written in the rate of reaction equation?

Chelsey_Schaum1H

How is there a change in enthalpy when q= 0 and there is no temperature change?

Chelsey_Schaum1H

Q: When one physicist asks another, "What's new?" what's the typical response?
A:C over lambda.

Chelsey_Schaum1H

Q: What was the charge when NaCl got arrested?
A: A salt

Chelsey_Schaum1H

Is it possible to use standard enthalpies of formation instead of Hess' Law? I did standard enthaplies of formation and got 312. The answer is -312, I can't figure out where the negative comes from.

Chelsey_Schaum1H

I think you can use mmol in an ice chart as long as the volume is in ml. At the end when you convert to molarity and divide the mmol by ml the mili will cancel out and you'll be left with just mol/L which is molarity.

Chelsey_Schaum1H

I think of the pKa like the pH of the acidic constant.
Like in pH=-log[H30+] is the pH of H30+,
PKa= -log[ Ka] is the pH of the Ka constant kind of.
The pKa can be used to test the strength of the acid. The lower the pKa is, the stronger the acid will be and vise versa.

Chelsey_Schaum1H

On the hw question 57 it asks you to draw the molecular orbital diagram for NO+ then asks will the electrons have a higher probability of being at N or O and why? I understand how to draw the diagram but not sure about the second part of the question

Chelsey_Schaum1H

Hey can someone tell me how you know which hybrid orbital to use? I know linear you use sp and trigonal planar sp2 etc. but why do you use these?

Chelsey_Schaum1H

Hey, can someone please explain what an antibonding orbital is? And how do you know if the molecule has any antibonding orbitals?

Chelsey_Schaum1H

A formal charge is just the charge on each specific atom in the molecule, the formal charges of the atoms should add up to the charge of the whole molecule. The purpose of the formal charges is to see the stability of the structures I think. The structure is more favored and stable if the central at...

Chelsey_Schaum1H

Hey! So this question is regarding the Heisenberg uncertainty principle which is (Delta x)(delta p)= h/4pi You are given the uncertainty in position (delta x) as 350 pm. You are asked to find the uncertainty in speed, or velocity, but first you have to find the uncertainty in momentum (delta p). Fir...

Chelsey_Schaum1H

Hey! So the work is given in the problem. The work is equivalent to the threshold energy. First, you need to convert the work from ev to joules Second, convert each wavelength of light given (the red and violet) into energy using E=hc/(wavelength) Third, compare the energies you calculated to the th...

CHEMISTRY COMMUNITY

Search found 15 matches

Re: Functional Group

Multiple double or triple bonds

Catalyst [ENDORSED]

Enthalpy

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Hw question 8.57

Re: Using mmols

Re: Difference between KA and PKA

Molecular Orbitals of Different Metals

Which Hybrid Orbital

Antibonding Orbitals

Re: formal charge [ENDORSED]

Re: Homework Problem 1.43

Re: 1.69 Homework Problem [ENDORSED]