Search found 432 matches

Sat Oct 17, 2020 4:15 am
Forum: Chemistry forum
Topic: Question about aluminium electrolysis (little complex)
Replies: 9
Views: 1829

Re: Question about aluminium electrolysis (little complex)

Fri Oct 16, 2020 1:56 pm
Forum: Chemistry forum
Topic: Equation balance help
Replies: 3
Views: 74

Re: Equation balance help

C6H12O6 + O2 + NH3 => C5H7NO2 + CO2 + 4 H2O

RQ = 1
Fri Oct 16, 2020 12:19 pm
Forum: Chemistry forum
Topic: Equation balance help
Replies: 3
Views: 74

Re: Equation balance help

The balanced equation is still wrong.
Left 30 C, 78 H, 30 O, 6 N Right 31 C 78 H, O 32 ,6 N
You forget to count the CO2

The RQ = V(CO2)/V(O2)
Thu Oct 15, 2020 10:25 pm
Forum: Chemistry forum
Topic: Question about aluminium electrolysis (little complex)
Replies: 9
Views: 1829

Re: Question about aluminium electrolysis (little complex)

No need, the solutions already given.
Thu Oct 15, 2020 8:56 am
Forum: Chemistry forum
Topic: Writing Chemical equations
Replies: 1
Views: 68

Re: Writing Chemical equations

Wed Oct 14, 2020 12:37 am
Forum: Chemistry forum
Topic: Chemistry
Replies: 1
Views: 133

Re: Chemistry

1.First develop the equation for this reaction. All compounds are given.
2.Then look the relationship of the moles between chlorat and oxygen
3.Convert this to the demanded value of 15 mol.
4.Post your work and result here
Mon Oct 12, 2020 9:24 am
Forum: Chemistry forum
Topic: pregunta
Replies: 1
Views: 103

Re: pregunta

First you burn sulfur.
Develop this equation first

The product react with it.

Carbon is not necessary here.
Sun Oct 11, 2020 10:28 pm
Forum: Chemistry forum
Topic: pregunta
Replies: 2
Views: 90

Re: pregunta

1. Calculate the mass of sulfur using percentage math
2. Calculate the mole of sulfur
3. Develop the equation to get calcium sulfite
4. According the equation get the mole of CaO
5. Convert this to mass
Sun Oct 11, 2020 10:24 pm
Forum: Chemistry forum
Topic: pregunta
Replies: 2
Views: 90

Re: pregunta

Please use English What would be the equation for the following problem? A certain sample of carbon has 1.6% by mass of sulfur when the carbon is burned the sulfur is converted into sulfur dioxide. To avoid contamination the sulfur dioxide is treated with calcium oxide CaO to form calcium sulfite Ca...
Wed Oct 07, 2020 12:49 pm
Forum: Chemistry forum
Topic: Why is my answer wrong?
Replies: 1
Views: 206

Re: Why is my answer wrong?

Yours is also balanced on paper, but your compound is not existing, that is the problem. Nitrogen has -3, two of them -6 .Calcium is +2. So how many Calcium you need?
Wed Oct 07, 2020 1:06 am
Forum: Chemistry forum
Topic: Help Finding Molarity Solution
Replies: 3
Views: 192

Re: Help Finding Molarity Solution

Then you get the result.
Mon Oct 05, 2020 10:37 pm
Forum: Chemistry forum
Topic: Help Finding Molarity Solution
Replies: 3
Views: 192

Re: Help Finding Molarity Solution

1. Calculate the mass of Vanadiumcarbonate to mole
2. Calculate according the equation the mole of magnesiumcarbonate.
3. Calculate the molarity by using the given volume.
Sat Oct 03, 2020 3:22 pm
Forum: Chemistry forum
Topic: Help Balancing this Chemical Equation
Replies: 1
Views: 156

Re: Help Balancing this Chemical Equation

The Tantalum phosphate is wrong. Ta has oxidation number 5.
So the formula is wrong.
Sat Sep 26, 2020 4:24 am
Forum: Chemistry forum
Topic: Chemistry
Replies: 1
Views: 237
To give only the sum formula, it doesn't help.

Tell us from each component its name.
Thu Aug 13, 2020 3:28 am
Forum: Chemistry forum
Topic: laprofe
Replies: 3
Views: 1574