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-5 votes
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Actives ph adjustments doubts

I hope someone can answer my question please. Should I measure the pH value after each addition of active ingredients in my cosmetic formula to ensure that the active ingredient remains within its ...
Free9s's user avatar
  • 1
2 votes
1 answer
57 views

Amination of 2,4 dichloroquinazoline - role of dioxane as solvent and required temperature

In the compound of 2,4 dichloroquinazoline; if an amination reaction is done on 2,4 poitions, why is dioxane used as solvent? Why this solvent in particular (what are its properties, effect , and the ...
NEMO's user avatar
  • 29
-1 votes
1 answer
235 views

Is a Sodium Chlorite Product Safe for Car Odor-Removal? [closed]

I would like to ask the science community's opinion about the safety of sodium chlorite for use as an odor-eliminator in an automobile's interior. While the ingredient in the product is sodium ...
Jeff's user avatar
  • 1
0 votes
0 answers
124 views

For radical polymerization reactions, azobis(isobutyronitrile) (AIBN) can also be used as a radical initiator

Draw the mechanism of radical formation if you know that N2 is formed as a by-product. The solution they give us is I know what radical polymerization is. The free electron of a molecule binds with ...
wengen's user avatar
  • 423
2 votes
0 answers
1k views

What is the resulting solution after leaching hardwood ash with water?

After doing online research, I've noticed there are differing interpretations on what happens when ash is mixed with water, so I've come here seeking clarification on what indeed happens, and also ...
Mr. Cultist's user avatar
7 votes
1 answer
1k views

Fluorine detection in organic compounds

Many of you will know why I am asking this question. There is a lot of attention recently to the dangers of the so called Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS). In essence organic ...
Boris Hamanov's user avatar
3 votes
0 answers
69 views

Can color-changing leuco dyes be used to indicate when a certain molecule binds to another in a textile fabric?

Thermochromic leuco dyes change color when the temperature changes. I want to use leuco dyes to make a color-changing fabric. However, instead of using temperature to induce color changes, I want the ...
Msamericana1's user avatar
3 votes
0 answers
565 views

Does the anti-rust properties of bluing carbon steel disappear at a certain temperature?

Yesterday I blued my new carbon steel wok over a very high (200K BTU) burner which is capable of getting the wok to 1000+ degrees with ease. I understand that bluing adds a rust-resistant layer which ...
Tallboy's user avatar
  • 131
2 votes
2 answers
2k views

CO2 Catalytic Converter

We all know how CO2, as a greenhouse gas affects the climate and causes global warming. I was thinking of a small device, which could be attached to the exhaust pipe of an automobile. It could convert ...
Math_Whiz's user avatar
  • 369
1 vote
3 answers
88 views

Need reactants for a rocket [closed]

I am doing a project in chemistry at the moment to build a rocket out of materials that can be easily bought and that react strongly to create thrust. I was wondering if anyone knew a good chemical ...
William.'s user avatar
0 votes
0 answers
90 views

Parallel reactions for one product

For me it is clear how I could solved the kinetic of a parallel reaction like this But, how can I solve if this would be the case: Thanks in advance!
CaIsFR's user avatar
  • 1
0 votes
1 answer
350 views

Silver "polish" with aluminum foil left a hard yellow coat [closed]

I cleaned my silver teapot with the aluminum foil-baking soda-hot water method. Usually this works well on my silver plated flatware. However, this time it left a hard yellowish coating. I was only ...
Margaret McLane's user avatar
5 votes
0 answers
685 views

Is there an adhesive that is not dissolved by acetone?

I am trying to glue glass sheets together to make a sealed 13" x 13" x 13" box. Inside this box there would be acetone gas used to melt 3D printed parts to make them more durable. Acetone will remove ...
daniel's user avatar
  • 51
-4 votes
1 answer
75 views

Disinfectant production [closed]

One of my friends says that he made a disinfectant. These are the materials: 83% methanol isopropyl alcohol propylene glycol and the others are: citral, geraniol, linalool, dlimonene, l alpha ...
Sadeq Emo's user avatar
3 votes
1 answer
427 views

Remove stain from synthetic leather

I have a valuable soccer ball. It is not real leather, but a synthetic leather. I used this cleaning agent to remove a few marks: https://www.amazon.co.uk/Motsenbockers-Lift-Off-Graffiti-Remover-...
user997112's user avatar
-2 votes
3 answers
161 views

Was it CO2 or Muriatic Acid?

We had a malfunction with the chlorination system at our pool. There was a reaction between the Calcium Hypochlorite tablets and either $\ce{CO2}$, Carbonic Acid, or Muriatic Acid. There was a ...
user82195's user avatar
2 votes
2 answers
4k views

Potassium carbonate vs. Potassium hydroxide in Wood Ash

I'm trying to get more concrete information about the chemical process of creating soap from wood ash. What I’m confused about: Many soap-making materials say that you create potassium hydroxide ...
Azalea Ellis's user avatar
3 votes
2 answers
10k views

How to dissolve calcium sulfate fast?

I would like to dissolve $\ce{CaSO4}$ in a hardened condition (e.g. gypsum board) as fast as possible. I have seen in posts about $\ce{CaSO3}$ that vinegar and sulfamic acid are able to dissolve it. ...
Joe's user avatar
  • 33
0 votes
2 answers
2k views

What happens when mixing elemental mercury with sodium hypochlorite solution [closed]

Say you spilled elemental mercury from a thermometer and used household bleach on it, what would be the reaction if any?
Giannis Blokoun's user avatar
0 votes
2 answers
610 views

Predicting products of chemical equations? [duplicate]

Consider the equation $\ce{2 NaOH (aq) +Cl2 (g) —> NaOCl (aq) + NaCl (aq) + H2O (l)}$. How would one know the products of this reaction? Is there a general way of doing this? I would have no ...
user522534's user avatar
1 vote
0 answers
112 views

is rydberg constant and rydberg unit are same? [closed]

i want to ask a question that.is rydberg constant and rydberg unit are same. UNIT OF RYDBERG CONSTANT IS m^-1, right? Then what is rydberg unit.
Akshat's user avatar
  • 11
0 votes
2 answers
559 views

Do all decomposition reactions involve heat? [closed]

When water decomposes into Hydrogen and Oxygen as in 2H2O—-> 2H2+O2 does this involve heat? Is it always implied that heat is involved in a decomposition reaction or does this just spontaneously occur?...
user528911's user avatar
4 votes
1 answer
146 views

Given advancements of computational power an machine learning, how is it still not possible to predict products from chemical reactions? [closed]

Given that it seems every answer to this question is that it is "impossible to predict the outcome of a chemical reaction." Is chemistry just trial and error? Given how fundamental and revolutionary a ...
Bodhi1's user avatar
  • 49
0 votes
1 answer
7k views

Mixing isopropyl alcohol and propylene glycol [closed]

What would happen if I mixed isopropyl alcohol and propylene glycol? I need to winterize the water base of my basketball hoop, and already added some isopropyl alcohol, but I discovered that propylene ...
Margaret's user avatar
0 votes
1 answer
17k views

What is the liquid coming out of these Duracell batteries? [duplicate]

I picked up a remote control to a DVD player that I had not used in a couple months. The remote control was stored in a clean plastic bag. The bottom of the remote control is covered with a liquid. ...
Amazon Dies In Darkness's user avatar
2 votes
1 answer
159 views

How does non-electrolytic tinning work?

Having made diy pcb 's at home I have used things like tinnit which is a clear liquid . When the pcb is dropped into them , a layer of tin forms on the exposed copper regions on the pcb . I was ...
Aakusti's user avatar
  • 131
1 vote
1 answer
278 views

What pulls the electrons from iron in rust formation?

In the first step of formation of rust in iron, there is something that pulls electrons from the iron lattice, resulting in the formation of $\ce{Fe^{2+}}$. The reaction is: $\ce{Fe -> Fe^{2+} + ...
Henrique Rigitano's user avatar
-2 votes
1 answer
1k views

Does chlorine in tap water usually contain traces of cornstarch (or its derivatives)? [closed]

My online research has been challenging to separate out the corn starch or corn Derivatives that are obviously in chlorine weather in tap water or pools. There is medical support backing it but I ...
Robbe's user avatar
  • 15
0 votes
1 answer
1k views

Does saltwater damage electronics?

newbie here. I'm asking a question that is related to hygrometer calibration. I read in sensitive digital hygrometers, it is stated that saltwater test should not be used to calibrate as it will ...
dtjokro's user avatar
  • 11
3 votes
1 answer
447 views

Does benzene vapor react with air in a closed barrel?

If we would have benzene in a closed barrel for quite a while at room temperature, some vapor would form fast due to its volatility, right? But let's say that when the barrel was closed, some air got ...
Physther's user avatar
  • 954
3 votes
1 answer
4k views

What Type of Gas Would Vinegar and Epsom Salt Create Under Electrolysis?

I'm restoring a motorcycle and have a small homemade DIY zinc plating operation which consists of vinegar, epsom salt, a piece of zinc and a power supply. When I plate a steel piece such as a bolt or ...
Stuart's user avatar
  • 79
0 votes
1 answer
128 views

What can I use to make evaporating fake snow?

I want to create the effect that it's snowing in my living room. Ideally, there would be a chemical or substance that would be able to be sprayed out of a snow machine or pressurized canister etc. ...
Shepp's user avatar
  • 1
0 votes
1 answer
43k views

Does changing the volume of a reactant affect the rate of reaction? Does changing the volume of HCl affect the rate of a Mg & HCl reaction?

I'm doing a experiment in which I'm testing the affect of the concentration of a reactant on the rate of reaction. The reaction is between Magnesium and Hydrochloric Acid and so I'm changing the ...
raksha's user avatar
  • 1
4 votes
1 answer
4k views

How does common salt speed up the setting of the plaster of Paris?

We use plaster of Paris (POP) to cast and lift foot prints/tyre prints from the crime scene for evidence purpose. While preparing cast, we follow standardized protocol and add a pinch of common salt ...
NOOPUR MODI's user avatar
3 votes
3 answers
2k views

Simple practical, non-toxic, non-flammable reaction for slow release of CO2

Someone I know (not me) has recently had problems with bed bugs. I have advised him his best bet is to (1) Buy a kick-ass steam cleaner and nuke the brutes from orbit, (2) get a professional pest ...
John R Ramsden's user avatar
23 votes
5 answers
23k views

Iron chemistry: acetates for ebonizing wood

I have recently been “brewing” what is commonly called “iron acetate” for ebonizing wood, and I'd like to understand the chemistry of the iron/acetic acid reaction, which should be fairly simple, but ...
Emmet's user avatar
  • 331
3 votes
1 answer
3k views

Cleaning stains with hydrogen peroxide and bleach

A while back, I discovered that if you have a stain on a white shirt, you can remove it by putting hydrogen peroxide on the stain, then adding some bleach to it. I have used this for getting out wine,...
michael_timofeev's user avatar
37 votes
1 answer
34k views

Why super glue does not stick inside their own bottle?

We usually use super glue to stick any two objects but I was wondering like why don't they stick inside their own bottle ?
Shashank's user avatar
  • 1,491
0 votes
1 answer
901 views

do candles burn wood varnish fumes?

A friend of mine bought a piece of furniture that had a super smelly wood varnish, so I read around online and someone said to light candles to burn the chemical fumes. Does anybody know if there is ...
bad c. smell's user avatar
-1 votes
1 answer
100 views

The standard for drinking water is 1300 mg/l and the first area has a value of 837 µg

I am trying to figure out the hazard quotient of copper compared to the standard. The standard for drinking water is 1300 mg/l and the first area has a value of 837 µg. How do I convert this? I use ...
user155971's user avatar
-1 votes
1 answer
75 views

Regarding common preservatives and their effect

If someone has an average of 1 litre of Coke or Pepsi a day, would this form too much benzene oxide in the person's body or stomach and eventually effect part of their genetics?
user128932's user avatar
11 votes
2 answers
62k views

How does propylene glycol/glycerin form formaldehyde/acetaldehyde when vaporized?

So apparently, e-cigarettes produce formaldehyde/acetaldehyde because they vaporize propylene glycol/glycerin. What is the chemical reaction through which propylene glycol/glycerin forms formaldehyde/...
InquilineKea's user avatar
-1 votes
2 answers
12k views

Double Displacement Reactions that produce gas [closed]

What type of double displacement reactions can form a gas. How can i determine if a double displacement reaction will form a gas?
user3034084's user avatar
0 votes
3 answers
28k views

C + O2 is equal to C + O, how is that possible

C + O = CO2 . This is because carbon has valency of 4 while oxygen has valency of 2. When they react the valencies are criss crossed which means we will get C2O4 but this is simplified to CO2. But ...
Abhishek Mhatre's user avatar
0 votes
2 answers
188 views

What purpose do chain reactions serve?

I just learned what chain reactions are, but I can't seem to wrap my head around them because it seems utterly useless and doesn't accomplish anything. At least that's how I understood it because the ...
user3034084's user avatar
7 votes
1 answer
986 views

What is the chemical basis for superglues?

There are a variety of different types of glues, some derived from animal or natural materials and some designed by chemists. Some glues need to be activated before they harden and stick (many epoxies,...
matt_black's user avatar
  • 37.8k
4 votes
1 answer
543 views

Toilet spray effect

When we want the bad smell in toilet to go away we use a toilet spray to clean the air. But does it really cleans it, or just the elements in that spray have better effect on our smell sense. And we ...
Ilya Gazman's user avatar
4 votes
1 answer
1k views

Effect of vibration on wine quality

Most people that have ever visited a viticulteur (winemaker) will know that it is common wisdom that vibrations are bad for the wine quality. When I was just a kid the winemaker always told me that we ...
Michiel's user avatar
  • 6,750
9 votes
2 answers
2k views

How to fluorinate polyethylene?

I seek to put a layer of fluorine on a rotationally molded cross-linked polyethylene (XPE) plastic gasoline tank. I sell tanks and they will be more eco-friendly if I can accomplish this. I am an ...
Krista K's user avatar
  • 193
9 votes
2 answers
15k views

Why does milk flake?

While drinking milk (or better 'while seeing the milk I'm gonna drink') a question came up to my mind: Why does the milk sometimes flake, even if not in contact with some other substances? I guess ...
Em1's user avatar
  • 201