CHEMISTRY COMMUNITY

cristiancampana 2H

what would make one recognize that the equation is needed?

cristiancampana 2H

It was briefly went over in class once and thats it

cristiancampana 2H

how do you find a microstate

cristiancampana 2H

This may seem dumb but i need a refresher

cristiancampana 2H

which equation would one use to find it out?

cristiancampana 2H

how does the number of moles affect the rate of reaction

cristiancampana 2H

when do you flip the sign of anodes if the are giving in cathodes. I've done some questions and some do and some dont flip the sign and i am unsure why.

cristiancampana 2H

is it still Q= P^n/R^n?

cristiancampana 2H

how do you change intermediate K to one in terms of reactants or products

cristiancampana 2H

the example says that the oxidation number of carbon in C2H2O4 is +3 and that it is +4 in CO2. can someone explain why the oxidation numbers are so?

cristiancampana 2H

how does one calculate the change in entropy in a phase change. I know that Delta S= q(rev)/T= Delta H(fusion)/T , but why suddenly change q to Delta H

cristiancampana 2H

I'm not sure what free energy is, can someone explain it please ( as in Gibbs free energy)

cristiancampana 2H

can heat capacity and entropy ever have the same value since their formulas are so similar?

cristiancampana 2H

why does delta S use q of a reversible process and not of an irreversible process.

cristiancampana 2H

why must you assume that there is 1 mole of N?

cristiancampana 2H

in page 281, it says that Cv,m= 3/2R . so you multiply both sides by m to make Cv,m just Cv. Then Cv= ΔU/ΔT. multiply both sides by ΔT and you get ΔU= 3/2R n ΔT. and ΔU is just q because w is 0 since there is no change in volume.

cristiancampana 2H

in question 8.6, they ask you to determine if the volume of the resulting energy would be more or less to the initial energy. how does one solve for that?

cristiancampana 2H

does adding substance in an open system increase energy, why or why not?

cristiancampana 2H

why is it that sometimes q and w are negative, but in the equation ΔU= q+w they are both positive such in 8.11

cristiancampana 2H

for example on the practice final that was posted here, question 17 has a CN that are bonded by triple bonds. I know that a pi bond is caused by two p orbits overlapping. since there are two pi bonds, i do not know how to write the composition.

cristiancampana 2H

It's been a while and have forgotten how to test for electron shielding and its purpose. Can anyone help? I don't seem to grab the concept from just reading the book.

cristiancampana 2H

I know that an oxoacid is stronger the more O's it has, but do not know why. Thanks in advance.

cristiancampana 2H

there is sometimes a line that connects the TM to a different atom that is dotted but is not resonance. I know this because as i was working through a problem, there was the line connecting the transitionmetal to a N who had resonance with another element, and the FC that i calculated was one. Howev...

cristiancampana 2H

I was going over some practice final problems and did not know what protonation was and was wonder its significance and if itll be on the test.

cristiancampana 2H

which one will have stronger bonds and why?

cristiancampana 2H

How does one determine the strength of a carboxylic acid?

cristiancampana 2H

I remember learning that binary acids are stronger when the electronegativity is larger, but wouldnt it make it harder for the acid to let go of the H if its stronger?

cristiancampana 2H

will we have to know the full formula for (en) and (dien) on the final?

cristiancampana 2H

what is the relationship between pressure and compression? i believed that changing the pressure did not affect the overall Kc but i have a problem where it says that compression doubles the molarity.

cristiancampana 2H

I was wondering if there is no wavelength if an object is stationary or still. The momentum will be 0, but anything over 0 is undefined, so I was a bit confused.

cristiancampana 2H

I got this one wrong in the post-assessment and was not able to solve for the second answer, only the first: . The meter was defined in 1963 as 1,650,763.73 wavelengths of radiation emitted by krypton-86 (it has since been redefined). What is the wavelength of this krypton-86 radiation? To what regi...

cristiancampana 2H

I know how to get the first answer of .05but can not get the second answer and can not seem to figure out what is wrong

CHEMISTRY COMMUNITY

Search found 32 matches

when exactly do you use the Arrhenius equation?

how much of catalyst do we need to know? [ENDORSED]

how to find a microstate

what does W stand for in S=klnW

how to find the rate constant given instantaneous

number of mols effect on result

flipping the sign of anodes

how to find Q given molarity

changing intermediate K to regular terms

example 14.1 in the book

phase change change in entropy

what exactly is free energy?

entropy and heat capacity

q(rev)

9.13

Re: 8.31

determining value of volume based on enery [ENDORSED]

increasing energy in a system [ENDORSED]

the sign of q and w [ENDORSED]

what is the composition of a triple bond?

Electron shielding

OxoAcid strength

dotted line that is not resonance

the importance of protonation

Ca- vs Ca+

carboxylic strength

strength of acid

(en) (dien)

compression vs pressure

De Broglies relation

Atomic Spectra [ENDORSED]

Help with G.15 in the homework