Search found 1107 matches

by ChenBeier
Thu May 26, 2022 12:39 am
Forum: Chemistry forum
Topic: Solubility product constant
Replies: 4
Views: 376

Re: Solubiity product constant

PN = Personal notification also PM Personal message or easier called email.
by ChenBeier
Wed May 25, 2022 11:40 pm
Forum: Chemistry forum
Topic: Solubility product constant
Replies: 4
Views: 376

Re: Solubility product constant

1. Do you know the law of mass Action?
2. What is your own atempt to this.
3. Your deviation question, maybe send them a PN, here is not much traffic.
by ChenBeier
Mon May 23, 2022 12:35 pm
Forum: Chemistry forum
Topic: What is your favorite Periodic Table of Elements?
Replies: 5
Views: 765

Re: What is your favorite Periodic Table of Elements?

I think you had said enough to this topic, nothing New.
I will close with Amen.
by ChenBeier
Mon May 23, 2022 2:06 am
Forum: Chemistry forum
Topic: Calorimetry
Replies: 3
Views: 347

Re: Calorimetry

No, first get the heat capacity of HCl and KOH. This is the calibration of the device. With the second neutralisation you calculate the unknown HX and NaOH.
by ChenBeier
Mon May 23, 2022 1:44 am
Forum: Chemistry forum
Topic: Calorimetry
Replies: 3
Views: 347

Re: Calorimetry

Here are some basics https://www.wikihow.com/Calculate-Heat-Capacity For the first calculate the moles used in the neutralisation. There is some excess of one chemical. From this the heat capacity. Backwards use the second pair to get the Experimental enthalpy.Also here is excess of one chemical. Th...
by ChenBeier
Sun May 22, 2022 2:19 pm
Forum: Chemistry forum
Topic: What is your favorite Periodic Table of Elements?
Replies: 5
Views: 765

Re: What is your favorite Periodic Table of Elements?

Wow, a long Monolog. You do realy make a lange commercial for your product the PSE. But for me it is not first priority, like probably most of the 100 students. How many people do you think out of 100 who graduate High School, can really read and use the Periodic Table of Elements? Are you satisfied...
by ChenBeier
Sun May 22, 2022 2:39 am
Forum: Chemistry forum
Topic: EXTENDED PERIODIC TABLE/the electron multiverse
Replies: 2
Views: 3878

Re: EXTENDED PERIODIC TABLE/the electron multiverse

Don't answer 9 year old threads
by ChenBeier
Sat May 21, 2022 4:16 am
Forum: Chemistry forum
Topic: What is your favorite Periodic Table of Elements?
Replies: 5
Views: 765

Re: What is your favorite Periodic Table of Elements?

Standard Version is good enough, specific information can be looked up anywhere else. Internet, Textbooks, etc.
by ChenBeier
Fri May 13, 2022 4:30 am
Forum: Chemistry forum
Topic: Need help with a basic oxysalt
Replies: 1
Views: 2035

Re: Need help with a basic oxysalt

Do you mean Titanium-III-oxynitrite dihydrahte TiONO2 x 2 H2O
by ChenBeier
Thu May 12, 2022 5:18 am
Forum: Chemistry forum
Topic: SOS with equilibrium constant when Volume changed
Replies: 1
Views: 2028

Re: SOS with equilibrium constant when Volume changed

1. Kc = (cNO2)^2/cN2O4
2. If Volume drop to half then pressure increases by 2 times. pV = nRT = const, what means c is also double amount.
3. Kc = (cNO2-2x)^2/(cN2O4+ x)
Solve for x
by ChenBeier
Thu May 12, 2022 4:51 am
Forum: Chemistry forum
Topic: Need your help with Volume & PH of solutions
Replies: 1
Views: 2066

Re: Need your help with Volume & PH of solutions

1. Calculate the mol in 0,1 M 50 ml Acetic acid. This must be equal to x ml 0,2 M NaOH. Solve for x.
2. pH of salt of weak acids
pH = ½ (pKs + log c + 14)
Solve for pH , look up the pKs for Acetic acid in table or internet
by ChenBeier
Wed May 11, 2022 11:27 pm
Forum: Chemistry forum
Topic: stoichiometry
Replies: 1
Views: 2052

Re: stoichiometry

If you have one molecule of C3H6, how many molecules of CO2 and H2O you can get?
by ChenBeier
Mon May 09, 2022 12:35 pm
Forum: Chemistry forum
Topic: Product synthesis
Replies: 3
Views: 2392

Re: Product synthesis

You got it, so I close this Thread.
by ChenBeier
Mon May 09, 2022 12:08 pm
Forum: Chemistry forum
Topic: Product synthesis
Replies: 3
Views: 2392

Re: Product synthesis

There no significant reaction. With very high Temperatur maybe the ester bond will be exchanged.

Products will not be discussed.
by ChenBeier
Sun May 08, 2022 7:32 am
Forum: Chemistry forum
Topic: Electrolysis
Replies: 5
Views: 2597

Re: Electrolysis

Then time cannot be 14 h. If the time is 1,93 h then it works.