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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255 views

The effects of acetic acid on porous concrete brick and mortar joints for someone who has no understanding of chemistry

I mistakenly applied a patio cleaner containing acetic acid to my porous concrete facing brick thinking it was biocide. The concentrate solution has a ph of 3 and I diluted it to one part concentrate ...
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2answers
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Vinegar and baking soda: Cleaning agent or neutralized sludge?

I've seen it suggested countless times that combining vinegar and baking soda is a great home cleaning solution, but this always seemed like nonsense to me. I recognize that baking soda, a base, can ...
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Properties of Gases and Gas Law [closed]

A gas occupies a volume of 80.0ml and 630torr. At what temperature in °C would the pressure be 770 torr if the volume remains constant?
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Dry ice sublimation rate in water

As I got some a finger sized of dry ice in water, it started to bubble vigorously as expected and gave off a lot of smoke. But after 3 minutes or so, the rate of sublimation seems to slow down a lot, ...
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1answer
77 views

Formation of Goethite

Probably a simple question: When you're mixing potassium hydroxide ($\ce{KOH}$) with iron nitrate ($\ce{(FeNO3)3}$) to form ferrihydrate, does the temperature have to be below $\pu{60 ^\circ C}$?
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Oils that penetrate the Dermis [closed]

Can u provide me with a list of oils that have molecules small enough to penetrate most layers of the dermis. And is sperimidine one of them. All carrier oils need not be listed.
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Does baking soda permanently eliminate nutritional properties of vitamin C?

(Please forgive me for asking this if it's obvious, but it's not obvious to me.) EDIT: I am easily confused by chemistry, so please give me a very simple answer, followed by any lengthy further ...
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1answer
41 views

Determining ppm concentrations from food label information for ICP-OES analysis?

Overview: I am looking to determine what ppm values of trace metals are present in a particular formula while considering digestion, dilution, and detection limits for ICP-OES. For example, one ...
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2answers
119 views

Peak in beer freezing temperature plot

I left an open beer in the freezer while monitoring its temperature. The first minutes works as expected. But after the plateau, at about −8 °C, a peak appeared: I thought it was an artefact because ...
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1answer
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How can I dissolve carbon using generally available substances?

I am asking this question out of despair: my wife burned to death crèpes dough into our induction stove. I tried all usual products (the ones to clean the stove, vinegar, then sodium bicarbonate left ...
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What is the difference between mole and molar mass?

In my book it says 1 mole of carbon =1gram atom of carbon =12 gram if I see this relation that seems to me that 1 mole is mass of an atom In grams. But molar mass is different and why we use for ...
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Best practices to obtain small quantity of sealed solution without oxidising entire solution?

I'm ordering liquid based photo chemicals which only come in large bulk quantities. These solutions have a shelf life of approximately 2 years unopened, but 2 - 3 weeks once opened and oxidation kicks ...
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3answers
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Is it possible to find Molarity from the number of moles and density of solution?

Lets say we have the following data: Number of moles of NaCl = 3; Density of NaCl solution = 1.25g/L; Find molarity... Molarity = No. of moles of solute/ volume of solution in L we've been given the ...
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Is it possible to light a match by scratching it on hard surfaces, like they do in movies?

In movies cool guys don't need a matchbox − they just light a match by scratching it on whatever hard surface − concrete walls, wooden bar tables, leather belts, etc. Is it just a movie trick, or is ...
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1answer
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Safely lowering bleach pH without chlorine gas?

According to Eurekalert, by lowering the pH of household bleach (e.g., by adding vinegar or citric acid), we can increase $\text{[HOCl]}$ and consequently greatly improve the disinfecting capabilities ...
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1answer
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Need good aproximation to the atomic composition of late 1980's expanded polystyrene foam

I'm not a chemist and what little I know about expanded polystyrene (EPS) foam has been found by looking at articles on the internet. At work I need an approximation to the atomic composition (at %) ...
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How to prepare an emulsion (compounds in wt%)

I am trying to replicate an experiment to generate microparticles but I found myself confused about how to prepare the ingredients as some need to be weighed and dissolved before and I think the ...
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5answers
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How do I lower the surface tension of water without using a detergent?

For many years I've used a Rainbow vacuum, which uses a reservoir of water as the filter. While I'm quite pleased with it, I've found that when trying to vacuum cement dust or wood ash not all of ...
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Parameters of NaHCO3 + citric acid + H2O + NaCl mixture potentially impacting functional efficacy in pest control application?

I have been searching for infomation on this application, but have some specific questions that I have not seen directly addressed in the Google/Stack Exchange posts I've come across thus far; below ...
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1answer
189 views

Chemical equation for the reaction of Allura Red AC with NaClO

I am trying to figure out the chemical formula for the reaction between Allura Red AC and $\ce{NaClO}$ (bleach). I have never met such reactions before in my study, and I was unable or maybe looked in ...
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0answers
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Why don't ant bites kill us?

So, methanol is supposed to be toxic even in minute quantities because it is oxidised in our body to methanal and then methanoic acid. This can cause blindness and even death. Interestingly, ants ...
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2answers
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Hydrogen Peroxide & Vinegar Film reversal, can someone help me understand this reaction?

I'm interested in DIY photo development and I came across a reversal process that uses chemicals easily available at the grocery store. The purpose of a reversal process is to take a partially ...
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1answer
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How would you test for ppm of lead in a powder?

Looking to test the ppm for lead in a powder that is a food item. No experience in chemistry. Possibly may need to test for other heavy metals.
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1answer
447 views

How much CO2 is produced when burning 1GJ of Natural Gas

Background I am trying to determine how many kg of $\ce{CO2}$ are released when burning 1 GJ of natural gas. What I've tried I have very little chemistry knowledge, but google led me to these two ...
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1answer
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What are these fluffy white crystals growing out of my floor tiles?

Does anyone know what these white crystals are? As you an see they are growing out of some floor tiling in my house. They have been appearing for some years now out of the floor, which is cleaned ...
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1answer
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Questions about molar ratio

I am new to chemistry so this might be about a very easy concept that I might be misunderstanding but I would appreciate your help! I watched a video of combining hydrogen and oxygen and forming water....
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1answer
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How Bread is made with yeast, sugar and luke warm milk? [closed]

Materials and Apparatus: wheat flour sugar dry yeast glass bowl covering plate milk Procedure: Lukewarm milk is taken in the glass bowl and sugar is added to it. Then, yeast is added to the same. ...
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1answer
300 views

Why do purple Pedialyte freezer pops turn green when frozen?

I bought some Pedialyte freezer pops for my kids: And I've noticed that after spending a long enough time in the freezer, the purple "grape" pops change color from purple to green: After ...
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0answers
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Hazardousness of Chlorothalonil & metabolites in shower water? [closed]

Recently it came out, that in some parts of Switzerland (where I live), there is Chlorothalonil & metabolites/breakdown-products of it in the drinking water. Yikes. Problem is, chlorothalonil ...
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1answer
45 views

What can i safely use to remove grease and dirt from plastic (Polycarbonate, Polyethylene, Polystyrene and ABS)?

I need advice of how to clean plastic without produce cracks and white haze on them in plastic, exactly in: -Polycarbonate -Polyethylene -Polystyrene -ABS Basically the materials of optical media (CD, ...
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2answers
884 views

Quantifying soapiness; there's pH, pKa and pO2, is there a p_soap or p_surfactance?

Yes, $\mathrm{pH}$ is a concentration, $\mathrm{p}K_\mathrm{a}$ is a dissociation constant, and $\mathrm{pO_2}$ is a partial pressure. These are (roughly speaking) ways to indicate how much of a key ...
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0answers
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I have tried to remove oxidation from a metal scraper using vinegar, now the metal looks and smells burnt, what went wrong?

I have recently tried to remove some oxidation from a metal scraper spatula by using vinegar. After leaving it there for a couple of hours I was left with a burnt smell (with a hint of burnt candle ...
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3answers
59k views

What is hydrogen-rich water?

My question is: Is hydrogen-rich water true? I am aware of the alkaline water. I have read several articles in the Internet regarding this kind of water but I cannot seem to be convinced. Wikipedia ...
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2answers
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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
730 views

Is powdered acid dangerous? [closed]

I was told that an acid is only dangerous because it releases $\ce{H+}$ ions when in contact with water. Therefore, powdered acid should be completely safe on skin provided that your skin is not ...
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1answer
67 views

Why sulfonate of detergent is less likely to bind to ions present in hard water than carboxylate?

I was reading about why detergents do not form scum with hard water but soaps do, and according to wikepedia it has to do something with electrostatic interaction of sulfonates( most commonly) with ...
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2answers
113 views

Does 3% hydrogen peroxide neutralize household bleach?

Wiki and lots of sources all say the same thing. "1 part of 3% hydrogen peroxide to 10 parts water". But I am not trying to neutralize water I want to neutralize laundry bleach. It could ...
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1answer
31 views

Viability of reduction of oil paint binder and solvent flammability upon disposal via addition of water

As an artist, when disposing of a paper towel or cotton rag containing oil paint, turpentine, odorless turpentine substitute or mineral spirits at the end of a painting session, I generally pour water ...
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1answer
33 views

Do baking soda or vinegar reduce toxicity? [closed]

Both baking soda and vinegar can be used to remove cigarette odor from cloth and surfaces, at least temporarily. Do they reduce toxicity of the third hand cigarette smoke too or just 'hide' the smell?
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1answer
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Does graphite burn?

Is it possible to make graphite oxidize in the presence of oxygen? I know it's possible to make other forms of carbon oxidize and even burn with the production of residual heat in the presence of ...
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0answers
60 views

Why wouldn't a standard addition fluorometric method return the same starting concentration of a solution used to make the standards?

I am trying out a new standard addition method and having some very basic problems. I am hoping someone could point me in the right direction. I am using a fluorometric method to quantify ammonium in ...
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0answers
29 views

I stored CaCO3 in a PET container and it went through the plastic and made the container brittle. What is the reaction? [closed]

I stored CaCO3 in a PET container and it went through the plastic and made the container brittle. What is the reaction ? It also accumulate on the outside of other PET containers and made them brittle....
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2answers
2k views

Are food calorie values really integers?

According to what I've seen, fat has a listed caloric value of 9 Cal/g, while carbs and protein have listed caloric values of 4 Cal/g.* Are these numbers exact, or have they been rounded? And if they ...
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2answers
7k views

How can I emulsify Beeswax with Aloe Vera Gel?

I was looking thru ingredients for non-silicone based makeup primers and two ingredients always seem to be used: aloe vera gel and some type of wax, like jojoba wax, plus some type of oil to thin out ...
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4answers
11k views

What is the difference between galvanization and sacrificial protection?

If we use zinc in both methods, then the same process occurs: zinc corrodes in preference to iron, and eventually zinc has to be replaced. So what's the difference?
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1answer
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Hand Sanitizer Chemical Changes

I keep a bottle of hand sanitizer on my desk at work, as I touch a lot of things throughout the day. When I used it yesterday, a bit must've been left in the pump track or opening. So I was about to ...
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1answer
67 views

How to modify viscosity of ZnO ink?

I have stumbled upon these instructions on how to create $\ce{ZnO}$ nanoparticles. I am interested in making a DIY ink, for use with a parallel metal plate pen and a piezo-actuated microdrop nozzle. ...
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2answers
5k views

How to Prepare a Buffer Solution?

Problem I am given the task of preparing three buffer solutions at pH $10$, $9.5$, and $9.0$ . I have available concentrated ammonia and $\pu{3M}$ hydrochloric acid. The buffer capacity desired is $\...
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4answers
11k views

Synthesis of hydrazine with bleach and ammonia

I am trying to make rocket fuel using hydrazine, hydrogen peroxide and home products. I want to put an action figure in orbit. Is there any way to synthesize hydrazine with bleach and ammonia, using $...

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