Search found 1563 matches
- Sun Oct 10, 2021 5:42 am
- Forum: Chemistry forum
- Topic: HELP
- Replies: 3
- Views: 2127
Re: HELP
Something wrong, you cannot get an acid here acetic acid and an hydroxide here potassium hydroxide in same time. It will be neutralized to potassium acetate. Reaction with alkene https://www.chemistrylearner.com/wp-content/uploads/2020/07/Baeyers-Reagent.jpg Reaction with alkyne https://courses.lume...
- Mon Oct 04, 2021 4:57 am
- Forum: Chemistry forum
- Topic: calculating the concentration
- Replies: 4
- Views: 2536
- Mon Oct 04, 2021 3:35 am
- Forum: Chemistry forum
- Topic: calculating the concentration
- Replies: 4
- Views: 2536
Re: calculating the concentration
c = n/V concentration = moles divided by volume
- Sun Oct 03, 2021 10:22 am
- Forum: Chemistry forum
- Topic: Calculate the amount of substance
- Replies: 3
- Views: 2064
Re: Calculate the amount of substance
Ok, it's a different question. Phosphorouspentoxide is existing bimolecular what means the real formula is P4O10.
The reaction is P4 + 5 O2 => P4O10 = 2 P2O5
But 4 mol is wrong, make no sense.
The reaction is P4 + 5 O2 => P4O10 = 2 P2O5
But 4 mol is wrong, make no sense.
- Sun Oct 03, 2021 6:17 am
- Forum: Chemistry forum
- Topic: Calculate the amount of substance
- Replies: 3
- Views: 2064
Re: Calculate the amount of substance
It's a given number. It can also 10, 0,5 98,67 mol or others
- Sat Oct 02, 2021 12:39 pm
- Forum: Chemistry forum
- Topic: balance equation
- Replies: 1
- Views: 1861
Re: balance equation
What is the problem to solve.
- Fri Oct 01, 2021 4:05 am
- Forum: Chemistry forum
- Topic: balance eqution
- Replies: 5
- Views: 2680
Re: balance eqution
The first part maybe may work. PET breaks in terepthalic acid and ethylenglycol. It is not Di-Benzoylterephthalate it is Di- benzylterephthalate what is used as additive https://pubs.acs.org/doi/10.1021/ed080p79 The second one works different, you have to convert terepthalic acid with methanole to d...
- Thu Sep 30, 2021 11:35 am
- Forum: Chemistry forum
- Topic: Will it react?
- Replies: 3
- Views: 2106
Re: Will it react?
Can you calculate 1/2 + 1/3? In the same way you get the coefficients of the equation.
- Thu Sep 30, 2021 10:04 am
- Forum: Chemistry forum
- Topic: Will it react?
- Replies: 3
- Views: 2106
Re: Will it react?
It will, but the equation is not balanced.
Magnesiumphosphate will precipitate.
Magnesiumphosphate will precipitate.
- Thu Sep 30, 2021 8:49 am
- Forum: Chemistry forum
- Topic: please, help be with balance
- Replies: 11
- Views: 8569
Re: please, help be with balance
Why do you copy, the same I wrote above.
Did you missed it as well????
Did you missed it as well????
- Thu Sep 30, 2021 8:07 am
- Forum: Chemistry forum
- Topic: Percentage by weight of a mixture
- Replies: 2
- Views: 1976
Re: Percentage by weight of a mixture
two equations
m(NaOH) + m(KOH) = 1.15 g
n(NaOH) +n(KOH) = 48.4 ml * 0.5 mmol/ml
use n =m/M
m(NaOH) + m(KOH) = 1.15 g
n(NaOH) +n(KOH) = 48.4 ml * 0.5 mmol/ml
use n =m/M
- Thu Sep 30, 2021 2:24 am
- Forum: Chemistry forum
- Topic: balance eqution
- Replies: 5
- Views: 2680
Re: balance eqution
Again this can not be answered with this Information. Tell the educts and the products.
C22H18O4 =?
C2H6O2 = ethylenglycole ?
CH3OH= methanole
C7H8O = ?
(C10H8O4)n =?
C22H18O4 =?
C2H6O2 = ethylenglycole ?
CH3OH= methanole
C7H8O = ?
(C10H8O4)n =?
- Wed Sep 29, 2021 2:46 pm
- Forum: Chemistry forum
- Topic: chemical equilibrium
- Replies: 1
- Views: 1634
Re: chemical equilibrium
To add protons in chemistry means to acidify the solution, to add acid.
Dichromate and chromate are in Equilibrium
Cr2O7 2- + H2O <=> 2 H+ + 2 CrO4 2-
Dichromate and chromate are in Equilibrium
Cr2O7 2- + H2O <=> 2 H+ + 2 CrO4 2-
- Wed Sep 29, 2021 2:41 pm
- Forum: Chemistry forum
- Topic: balance eqution
- Replies: 5
- Views: 2680
Re: balance eqution
So it make no sense, write structure formula or names of compounds. Conditions, etc.
- Tue Sep 28, 2021 8:08 am
- Forum: Chemistry forum
- Topic: Unit Conversion mol/kg to mmol/g
- Replies: 14
- Views: 7993
Re: Unit Conversion mol/kg to mmol/g
I answered already in my first post. Why do you copy this again.