Questions tagged [everyday-chemistry]

Applications of chemistry to reagents, reactions and processes of everyday life. Use this tag for question on chemistry in an out-of-laboratory/class context. DO NOT use this tag merely because the question is about simple chemistry.

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60 views

How rare is a diamond that melted? [on hold]

My friend found this diamond which shows wax like drippings into an open cavity whuch is on the other side not shown... How rare is this diamond and would it be a valuable speciman for science?
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12 views

What is the valency of d block in modern periodic table [on hold]

I live in Neemkathana. Give answer of this question frequently.
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1answer
815 views

Solvents adequate for dissolving overheated polyethylene terephthalate glycol-modified (PETG) residue?

I work in 3D printing. One of the materials we use is polyethylene terephthalate glycol-modified, or PETG. It is a pretty good material, both in strength and appearance. It is melted and pushed ...
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1answer
7k views

What is the formula of bleaching powder?

What is the structure and preparation for bleaching powder? Why there is a controversy in the formula of bleaching powder? I have encountered many forms of the formula of bleaching powder, like $\...
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0answers
18 views

Supplement weight by element or compound

When a vitamin or supplement claims, for example, that it contains 600 mg of calcium (as calcium carbonate) what does that mean? Does each tablet contain 600 milligrams of the element calcium? Or ...
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1answer
2k views

Will adding apple cider vinegar to freshly pressed fruit juice preserve it

Would adding apple cider vinegar to freshly cold pressed fruit juice be able to preserve the fruit juice and extend its shelf life? Would the juice change into vinegar with time?
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5 views

What causes a binder (like silicone resins) to inhibit the proper evaporation of water from curing grout? [closed]

While investigating various tile grouts, I read, "What is a polymer in grout?These grouts are water-based and use polyurethane, acrylic polymer, and/or silicone resin for the binder, in place of ...
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0answers
20 views

How to remove the foggy discoloration in polycarbonate tubes caused by acetone?

Unknowing that the tubes used in the centrifuge are made of polycarbonate, I cleaned them with acetone. Following, a white smoky discolouration appeared and the tubes turned opaque. Is there any way ...
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2answers
318 views

What fraction of the vapour in electronic cigarettes is water?

Not a chemist but looking for an answer I can understand. Electronic cigarettes use propylene glycol and/or vegetable glycerin as a base liquid. This is heated and vaporized at a low temperature (my ...
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2answers
57 views

Materials used in cooktop heating element, and reason for black appearance

I have been interested in the structure of heating elements/coils used in cooktops. I am referring to something such as in the following picture: I have a cooktop at home with such elements, and at ...
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1answer
29 views

Emulsifier for water, been oil [closed]

I am trying to blend neem oil and water and I'm wondering what the best emulsifier would be 10% neem oil 90% water thank you
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3answers
6k views

Why does chocolate melt so easily?

(Yes, I know the question sounds super-trivial... but bear with me here) Most chocolates (especially milk-chocolate) tend to melt into this sticky (albeit delicious) mess at temperatures slightly ...
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1answer
119 views

Is the flint used in disposable lighters toxic?

Especially the sparks that result when using them. I heard this from a friend and can't seem to find an answer on Google.
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4answers
5k views

Sensitive test for lead in water?

Some of my friends are in Flint and I'm horrified by their situation. I would like to learn how to test for lead independently. After all if you can't trust the state sending them water to test is ...
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3answers
4k views

Why is it considered acid rain with pH <5.6?

I recently read in a book that rain is considered acid rain if the pH falls below 5.6. However a substance is acidic when the pH is below 7; so why is the boundary for acid rain 5.6? I was thinking ...
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1answer
8k views

Using table salt as a way to limit humidity in an unoccupied house

We own a static caravan in the UK (Snowdonia region, so rainy and wet all year round, moderately cold winters) and we leave it unoccupied during Winter (Oct-Feb). We were advised of an apparently ...
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6answers
5k views

Un-denaturing industrial alcohol

I have a question regarding the denaturation of industrial ethanol with methanol to discourage its consumption. The boiling point of methanol is 64.7 °C, while the boiling point of ethanol is 78.37 °...
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1answer
8k views

Why does steel wool catch fire when rubbed with a battery?

I was watching an episode of Man vs Wild where steel wool was rubbed with phone battery. To my surprise, the wool caught fire. What is the reason for this?
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1answer
450 views

To extend the life of a cartridge razor blade, should the blade be stored in oil or alcohol?

I've read varied recommendations about extending the life of a razor blade. Some say should stick the blade in oil when not in use, others say in alcohol, others say in a bowl of rice or silica gel. ...
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1answer
122 views

What chemicals cause the softer, less-raw taste of purified water sold in bottles?

I've seen the post, "What defines an element's taste?", but it doesn't answer my question. I took water that is supplied by the municipality corporation and put it through a gravity based water ...
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8answers
46k views

Is toothpaste solid or liquid?

My teacher didn't answer this properly: Is toothpaste solid or liquid? You can't say toothpaste is a solid because solid material have a fixed shape but toothpaste doesn't. However, you can't say ...
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1answer
46 views

Reaction of sulphur with calcium carbonate

Can sulphur react with calcium carbonate to form sulphur trioxide and calcium carbide, as the energy of 3(S=O) is greater than ((C=O) +2(C-O))? EDIT: i forgot to say that this is in an oxygen-free ...
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1answer
35 views

Dissolvant for the black spots around the rear mirror of the front window of my car

I make pictures for Mapillary. I would like to place my dashcam as high as possible, but those black spots get in the way. Scraping them off does not work. But I can feel their relief. If no one has ...
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1answer
26 views

What ratio of bicarb to sugarcane juice with a pH level of 4.5-5.5 to neutralize pH level? [closed]

I am thinking of adding baking soda to sugarcane juice to eliminate the fruity acid that is present. The pH of sugarcane juice ranges from 4.5-5.5. I wonder how much baking soda should I incorporate ...
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1answer
64 views

Producing soap from sodium carbonate and oil

Can we get soap by mixing $\ce{Na2CO3}$ from seaweeds with oil? I am not good at chemistry and saw this in an anime Dr. Stone, so I just wanted to know if it is true or not.
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Non-chlorine bleach vs. hydrogen peroxide 3% soln from pharmacy: Disinfecting gravity water filter system

I'm seeking to disinfect a Platypus gravity water filter made with hollow fibers. My main concern is to address any mold / mildew that may have developed inside the hollow fiber filter due to long ...
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0answers
22 views

what does the mixture between urine and dishwater cause? [closed]

I have built an rv from a short school bus. I ran a hose from the "toilet" to a tank in the back to drain the toilet. We wash our dishes in a basin on the counter and dump the dishwater into the ...
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1answer
42 views

Reverse washing soda buildup on stainless steel

In a home brewing project, I use washing soda (Na2CO3) to remove labels and glue from previously used bottles. In doing this, my flip-top bottles (which have a stainless steel flip top arm) often get ...
2
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0answers
49 views

Are there any gases that can not be turned into liquid, or liquids that can not be frozen solid?

My son points out that some solids can not be melted (because they combust, for example). He wonders if there are any liquids that can not be frozen, or gases that can not be liquified.
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1answer
174 views

What home products are reactive with glass?

Glass seems to be one of the most stable solid substances - which chemicals, particularly home products that react with glass?
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3answers
7k views

Why does hand sanitizer turn into a liquid after coming out of the bottle?

Hand sanitizer is a gel in its bottle, but when I pour it on my palm, it turns into a free flowing liquid. Why does that happen? It doesn't turn to a liquid when I pour it on my floor or my table. ...
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1answer
39 views

Is there any bad side effects for using calcium chloride to replace a running dehumidifier?

My dehumidifier costs to much to run, so I’m thinking about using calcium chloride to keep my basement dry(er) ALSO, this may keep my mouse problem to a minimum... my questions are -Will this be ...
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0answers
200 views

What's causing my plastic fork to break?

This has been a real mystery for me at work. For the past three days I've eaten salads for lunch. I used a plastic bowl with a lid and when I was finished with the salad, I didn't rinse out the bowl ...
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1answer
83 views

What chemicals are in anesthetic drugs [closed]

What chemicals are there in an anesthetic drug and how it reduces the pain of a person? Are the chemicals used in it safely, dangerous or both?
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5answers
1k views

Is identifying a chemical equivalent to be able to produce it?

This question is a follow up of another thread, where we are discussing Theresa May's accusation of the Russian government which is supposedly behind the recent chemical attack in the UK. Soon after ...
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2answers
3k views

Why does lavender oil dissolve plastic?

A few weeks ago I decided to harvest the lavender in my garden and put it through a still to extract the essential oils. The still in question is essentially just an air cooled condenser. I collected ...
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1answer
55 views

Why is the pH level of carbonation loss decreasing then increases afterwards?

We have done an experiment of the titration of unsealed sprite soda to find the amount of carbonic acid being loss on various duration (0 to 1 hour), due to decrease pressure. The calculation was to ...
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2answers
35k views

Does oil break down condoms?

It seems that every website on sexual health advises against using oil-based lubricants with condoms. It is claimed that "oil breaks down latex". One source claimed that a latex condom completely ...
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1answer
55 views

Can we tell if a compound is explosive by just looking at its chemical structure?

If I showed you a compound's chemical structure will you be able to tell if it can be used as an explosive or we can only know that by conducting chemical experiments?
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2answers
120 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 ...
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1answer
74 views

Phosphate extraction from sewage

I read that phosphate reserves will exhaust in coming years wiki, why don't we extract it from sewage , is it really that difficult to extract phosphate ?
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1answer
162 views

Amending soil pH to change the color of hydrangea flowers

I would like to ensure that my hydrangeas are blue. I am told that adding ammonium sulfate or aluminium sulfate will cause the soil to be more acidic. I am also told that adding elemental sulfur will ...
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1answer
53 views

How to oxidize tantalum? [closed]

I am interested in learning how to oxidize tantalum. I have seen some tantalum rings that the sellers say is a permanent smokey blackish color. But I've spoken to some people that say tantalum cannot ...
3
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2answers
228 views

How effective is a level A hazmat suit for immersion in deadly substances?

I know that level A type hazmat suits can protect against minor splashes, but could somebody in one survive without harm after complete immersion for a few minutes in deadly chemicals such as sodium ...
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1answer
75 views

Polyethylene glycol [closed]

I used a product on my family containing 90 percent Polyethylene glycol. Now I’m reading how Polyethylene glycol can be contaminated with ethylene oxide and also the lower the weight the higher the ...
5
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1answer
48 views

How can I figure out if my store bought chlorine is the percentage it says it is?

Chlorine is an important part of maintaining any pool. I've read horror stories of people buying chlorine from pool stores or big box stores and the chlorine being ineffective. If stored long enough ...
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0answers
64 views

About Smoke Grenades and Sugar Rockets

The most common formula for smoke grenades and sugar rocket fuel is $60\%\ \ce{KNO3}$ (potassium nitrate) and $40\%\ \ce{C12H22O11}$ (sugar). This is a 3:2 ratio, but I've also seen 2:1 and 5:3 with ...
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1answer
99 views

Why doesn't the density of water add up? [closed]

If the density of hydrogen is 0.09 g/ml and the density of oxygen is 1.429 g/ml, how is it that the density of water is 1 g/ml?
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28 views

natural staining on wood from human skin

I have a question about the dark staining that occurs on my wooden spectacle frames where they rub constantly with my skin around the ears and nose. Can anyone tell me what is causing this? And could ...