Search found 551 matches

by ChenBeier
Thu Mar 04, 2021 1:49 am
Forum: Chemistry forum
Topic: Arrangement of chemical compounds in order of increasing electric conductance
Replies: 2
Views: 7

Re: Arrangement of chemical compounds in order of increasing electric conductance

I dont think that any compound beside the hydrogen peroxide has an sigbificant conductance, because all are solid. Maybe some can work as semiconductor.
by ChenBeier
Wed Mar 03, 2021 1:36 am
Forum: Chemistry forum
Topic: HELP out:)
Replies: 2
Views: 32

Re: HELP out:)

What is oxygen diiodide. Do you mean diiodine oxid I2O
2 CoI3 + 3 O2 => Co2O3 + 3 I2O
by ChenBeier
Tue Mar 02, 2021 10:07 am
Forum: Chemistry forum
Topic: Help
Replies: 3
Views: 26

Re: Help

CuS(aq) and Ag3PO4( aq) is wrong, it is CuS(s), Ag3PO4(s)
by ChenBeier
Tue Mar 02, 2021 7:00 am
Forum: Chemistry forum
Topic: Ideal Gas Laws
Replies: 16
Views: 80

Re: Ideal Gas Laws

Where do you get this number.
The balloon has 4.5 l first now we decrease pressure to 1/3 p. If everything is constant then the volume will expand to 3 x 4,5 l = 13.5 l
Now we decrease the temperatur to half, the volume decrease also to half what means 6.75 l
by ChenBeier
Tue Mar 02, 2021 1:24 am
Forum: Chemistry forum
Topic: Ideal Gas Laws
Replies: 16
Views: 80

Re: Ideal Gas Laws

Its wrong. The result is 6.75 l
by ChenBeier
Tue Mar 02, 2021 1:22 am
Forum: Chemistry forum
Topic: Meanings of triangle symbol associated with right arrow.
Replies: 5
Views: 36

Re: Meanings of triangle symbol associated with right arrow.

How do you want stop the reduction of formaldehyde to methanol. No way.
by ChenBeier
Mon Mar 01, 2021 11:49 pm
Forum: Chemistry forum
Topic: Temperature Changes
Replies: 2
Views: 15

Re: Temperature Changes

The same law. pV = nRT, with n,R and V = const. p = k*T => k=p/T
by ChenBeier
Mon Mar 01, 2021 11:45 pm
Forum: Chemistry forum
Topic: Ideal Gas Laws
Replies: 16
Views: 80

Re: Ideal Gas Laws

The result is 1.5 x V.
by ChenBeier
Mon Mar 01, 2021 12:59 am
Forum: Chemistry forum
Topic: Ideal Gas Laws
Replies: 16
Views: 80

Re: Ideal Gas Laws

Do you know the ideal gas law equation pV = nRT
So you solve for V
Change now p to1/3p and T to 1/2T
by ChenBeier
Fri Feb 26, 2021 1:11 am
Forum: Chemistry forum
Topic: Help Balance Equation
Replies: 1
Views: 206

Re: Help Balance Equation

What happend with the Dichromate?
Barium react to Bariumchromate BaCrO4.
Do 3 steps . BaCO3 + HCl ......
K2CrO7 + HCl....=>.....to H2CrO4
Ba... + H2CrO4 ....=>.. BaCrO4
Combine everything
by ChenBeier
Tue Feb 23, 2021 8:46 am
Forum: Chemistry forum
Topic: Capture of Chlorine Gas
Replies: 5
Views: 115

Re: Capture of Chlorine Gas

Yes that is the case, probably to high current.