Search found 873 matches

by ChenBeier
Thu Sep 23, 2021 6:59 am
Forum: Chemistry forum
Topic: Substituting Elements in Balancing Equations
Replies: 1
Views: 66

Re: Substituting Elements in Balancing Equations

Number 1 is correct
Number 2 is like in math 1/2 + 1/3
Number 3 is similar Number 2
Number 4 HSO4 as neutral not existing. Otherwise H2SO4 has to be used.
by ChenBeier
Thu Sep 23, 2021 6:51 am
Forum: Chemistry forum
Topic: Sorry, I am having a brain fart
Replies: 1
Views: 24

Re: Sorry, I am having a brain fart

You will get coppersulfide CuS
The formula of coppernitrate is wrong.
by ChenBeier
Thu Sep 23, 2021 6:50 am
Forum: Chemistry forum
Topic: Lead (II) nitrate to lead white pigment
Replies: 5
Views: 38

Re: Lead (II) nitrate to lead white pigment

You bake lead oxide not lead metal, fumes are less, but a good hood with ventilation would be solve that Problem.
by ChenBeier
Thu Sep 23, 2021 6:46 am
Forum: Chemistry forum
Topic: Do humans breathe out carbon dioxide?
Replies: 1
Views: 28

Re: Do humans breathe out carbon dioxide?

So long you live, you will Inhalt oxygen and breath out CO2. Aber you die it will bestopped.
by ChenBeier
Wed Sep 22, 2021 1:49 pm
Forum: Chemistry forum
Topic: Lead (II) nitrate to lead white pigment
Replies: 5
Views: 38

Re: Lead (II) nitrate to lead white pigment

You add hydroxide, Filtration the precipitate and then bake it.
by ChenBeier
Wed Sep 22, 2021 12:33 pm
Forum: Chemistry forum
Topic: Lead (II) nitrate to lead white pigment
Replies: 5
Views: 38

Re: Lead (II) nitrate to lead white pigment

Yes you can add sodium carbonate and sodium hydroxide
by ChenBeier
Wed Sep 22, 2021 8:03 am
Forum: Chemistry forum
Topic: Making Iron(II) Sulfate | Urgent
Replies: 2
Views: 30

Re: Making Iron(II) Sulfate | Urgent

Take some iron nails and dissolve them in sulfuric acid. Or use iron nail to reduce iron-III
by ChenBeier
Fri Sep 17, 2021 11:03 am
Forum: Chemistry forum
Topic: What is the difference between ghostwriting and freelance writing?
Replies: 2
Views: 1336

Re: What is the difference between ghostwriting and freelance writing?

Ghostwriting has not be used in scientific publications. The work in science hast to be published from the people who did the work. This goes down to the work on school. The homework should done from the students not from a Ghostwriter.
by ChenBeier
Thu Sep 16, 2021 7:45 am
Forum: Chemistry forum
Topic: Someone here can tell us, how chlorine remove the impurity from the water..?
Replies: 2
Views: 615

Re: Someone here can tell us, how chlorine remove the impurity from the water..?

Who told this. Chlorine doent remove anything. It kills bugs and virus, but the dead animals still existing. There is no removement. For that you need filtration over active carbon.
by ChenBeier
Mon Sep 13, 2021 11:48 am
Forum: Chemistry forum
Topic: metal oxide and water
Replies: 1
Views: 622

Re: metal oxide and water

Water (pH neutral) works like acid and neutralize a metal oxid to Hydroxide what gives alkaline solution.

And nonmetal oxide with water gives acid , because in this case water is a base.
by ChenBeier
Mon Sep 13, 2021 11:40 am
Forum: Chemistry forum
Topic: Equivalent based questions (Valency Factors)
Replies: 7
Views: 1336

Re: Equivalent based questions (Valency Factors)

No your answer is correct Ratio is 1 K2Cr2O7 to 6 Na2C2O4 We have 50 ml 0.3 M Na2C2O4 what is 15 mmol So we need 1/6 of 15 mmol = 2,5 mmol K2Cr2O7 The molarity is 0,2 M so we need 2,5mmol/0,2 mmol/ml = 12,5 ml Your question we have 6×0.2M× V1=2×0.3M × 50 ml Where does the 2 comes from, it is the sam...
by ChenBeier
Mon Sep 13, 2021 9:21 am
Forum: Chemistry forum
Topic: please, help be with balance
Replies: 7
Views: 995

Re: please, help be with balance

Thiosulfat will be go to sulfate S2O3 2- + 10 OH- => 2 SO4 2- + 5 H2O + 8 e- Ozon will be to normal oxygen O3 + H2O + 2 e- => O2 + 2 OH- Second equation multiply by 4 4 O3 + 4 H2O + 8 e- => 4 O2 + 8 OH- Addition S2O3 2- + 10 OH- +4 O3 + 4 H2O + 8 e- => 2 SO4 2- + 5 H2O + 8 e- + 4 O2 + 8 OH- Simplef...
by ChenBeier
Mon Sep 13, 2021 9:14 am
Forum: Chemistry forum
Topic: chemical reaction
Replies: 3
Views: 772

Re: chemical reaction

I dont know for what the citrate is for.

The reaction is Y(NO3)3 + 3 NaOH => Y(OH)3 + 3 NaNO3
by ChenBeier
Sun Sep 12, 2021 10:20 pm
Forum: Chemistry forum
Topic: what is the oxidation temperature of BCl3?
Replies: 1
Views: 605

Re: what is the oxidation temperature of BCl3?

What do you mean with Oxidation temperature. Boron is already oxidised
to B 3+ .