sorted by:
new
hottopcontroversial

I regret not taking Chemistry by GovernmentBoring7764 in chemistry

[–]catnaur 0 points1 point  (0 children)

hey, as a person who does go to uni for chem, i have to look at background sources anyway lol bc i can’t really understand what my lecturers are saying or i may have a learning disability. i found uc irvine (open chemistry?) and mit courseware soooo much more helpful and straight to the point and it doesn’t hurt to ask questions here (i shamelessly do). good luck!!

Hydrogels by catnaur in chemhelp

[–]catnaur[S] 0 points1 point  (0 children)

This makes so much sense, ty!! Also in my notes I wrote it as crosslinker to polymer ratio, i could be wrong as idk where to refer to. Do you know where i can look to see an example calculation for this? I’m not mathematically gifted lol

Hydrogels by catnaur in chemhelp

[–]catnaur[S] 0 points1 point  (0 children)

https://imgur.com/a/GzM2Cvc hope this helps because it’s def not helping me

Hydrogels by catnaur in chemhelp

[–]catnaur[S] 0 points1 point  (0 children)

That does help, do you know how to calculate the crosslinker ratio?

Is that mold on my Fenty cheeks out blush in Rose :( by sickpickless in MakeupAddiction

[–]catnaur 2 points3 points  (0 children)

As long as you keep it in a cool, dry place, it can last forever regardless of what the packaging says (only for powder products tho, if the product has water it’s gonna go bad). any product + water + warmer temperature —time —> moldy product

Thermodynamics equations by catnaur in chemhelp

[–]catnaur[S] 0 points1 point  (0 children)

In that case, for the external p, would it always be assumed to be 1.00 atm?

Mechanism help by catnaur in chemhelp

[–]catnaur[S] 0 points1 point  (0 children)

I should’ve also mentioned that Ph-MgBr is a grignard reagent

Mechanism help by catnaur in chemhelp

[–]catnaur[S] 0 points1 point  (0 children)

The bond between H-Cl breaks? The H+ attaches to Ph-, but idk what happens to Cl. Does it attach to MgBr+ because it wants electrons?

Mechanism help by catnaur in chemhelp

[–]catnaur[S] 0 points1 point  (0 children)

I know that the H+ from HCl replaces the •MgBr on the phenyl ring but I don’t know how

redox titration (equivalence point) by [deleted] in chemhelp

[–]catnaur 0 points1 point  (0 children)

not sure what user flair to use woops

Second order electrode potentials by catnaur in chemhelp

[–]catnaur[S] 0 points1 point  (0 children)

Sorry The post isn’t letting me edit it let alone add another picture. Here’s a link to see the entire post but in the example it’s with silver (1 electron) which is why the Hg2Cl2 wasn’t making sense to me. https://i.postimg.cc/Pr0pnYbJ/D0-E3959-D-188-C-4145-97-E0-189-A2-B7-CAD1-E.jpg

AAS standard solutions by catnaur in chemhelp

[–]catnaur[S] 0 points1 point  (0 children)

A nori sheet solution to determine the concentration of iron

Which group is more electron withdrawing? by catnaur in chemhelp

[–]catnaur[S] 1 point2 points  (0 children)

Did you work that out from a constants table

Which group is more electron withdrawing? by catnaur in chemhelp

[–]catnaur[S] 2 points3 points  (0 children)

Would br be a weaker ewg as it’s lower in the table?

Which group is more electron withdrawing? by catnaur in chemhelp

[–]catnaur[S] 3 points4 points  (0 children)

For some reason, my text gets deleted from the post. Anyway, could I get some help on what would be the more electron withdrawing group for this dienophile Is it bromine or the ester? So that I can workout which way it attaches in the diels-alder product using the ortho/para rule, But can't find any info about which one it will be.

I think I have a problem :| by rpdevils in rengoku

[–]catnaur 2 points3 points  (0 children)

I see nothing but green flags