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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HOw can I calculate mass of solute given mL and mol/L

So I've been stumped on a problem for a very long time. I've just started chemistry so I am sort of new to this. Any help would be appreciated: Calculate the mass of solute that is needed to prepare ...
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The pH level of a neutralized solution [closed]

i mixed nitric acid and sulphuric acid with water. Before disposing water i want to neutralize the solution. what should i do?
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why should we add the fat slowly when making an emulsion?

I'm sorry if this is in the wrong place but recently I realized that every time I got told to make an emulsion even when cooking (ie making mayo or cake batter) it is instructed to add the fat (or ...
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29 views

Are oxides of sulphur and carbon adsorbed into limestone/marble?

Oxides of sulphur and carbon are commonly present in the atmostphere in areas close to industries, can such oxides get adsorbed into the surface of limestone and marble and cause discolouration and ...
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I need to know the decay rate of h202 mixed with water [closed]

I am trying to find the chemical decay rate of H2O2 34% Water66% mixed with tap water at a 1 to 3 parts water
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60 views

Is it safe to open old 100% isopropyl alcohol [closed]

I have a 3 month expired 1 quart bottle of 100% isopropyl alcohol. Someone gave it to me last year when covid started and I totally forgot about it. I believe it’s never been opened. I was originally ...
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28 views

Action of Fuller's Earth on Marble and Limestone

Using Fuller's earth is a very common and harmless way to treat marble and limestone that has been damaged/corroded by atmostpheric pollutants such as PM2.5/PM10 carbon particles (Soot) , Oxides of ...
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2answers
49 views

How much 3% hydrogen peroxide should I add to 1 gallon of household bleach to neutralize it and what will the liquid be that remains?

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
35 views

How to dissolve brass surrounded by aluminium?

I have a broken off brass needle stuck in a caste aluminum hole. (It’s the pilot mixture jet on a carburetor). I was wondering if there was a chemical that would dissolve the brass while not reacting ...
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34 views

Data Analysis Activity [closed]

Activity Background: Five patients (Aliza Aldred, Bob Barton, Conor Chavez, Dwayne Drake, and Emma Eriksen) were administered a drug called warfarin, which is known to slow the formation of blood ...
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Why does the application of external mechanical pressure increase the performance of lithium-ion batteries?

Many electric vehicle batteries - specifically lithium-ion ones considered for this query - can be subjected to external mechanical pressure because it increases battery performance. What components ...
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What is the rate constant k for the reaction between potassium manganate and oxalic acid?

For my school's chemistry classes, I am investigating the kinetics of the redox reaction between $\ce{K2MnO4}$ and $\ce{C2H2O4}$. I analyzed the data using a colorimeter set to $\pu{565nm}$. ...
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What are the common procedures for viewing suspensions of volatile organic compounds under an optical microscope?

I am looking to measure a mixture of triethylamine and water in a micro-Raman instrument. This involves placing the sample under an optical microscope. The "default" sample preparation is to ...
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49 views

Why is NaCl so abundant in the ocean [closed]

Why is sodium chloride far and away the most abundant salt dissolved in ocean water. Its two constituent ions do have a very high frequency in the crust of the earth but they are far from the most ...
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1answer
56 views

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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3answers
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Why is milk not sold in food-grade stainless steel bottles? [closed]

I have grown up in a country where milk is stored in a steel container in the fridge at home. That’s what makes me wonder why milk is not sold that way? Nowadays the steel container single wall is ...
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1answer
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Is it possible to make Dipotassium Phosphate from Mono-potassium phosphate and potassium hydroxide?

Having fertilizer formulated and asked for 100% Dipotassium phosphate, the formulator says its reacting mono-potassium phosphate with potassium hydroxide to make it. Just wanted to double check and ...
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41 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 ...
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43 views

The pH of tap water changes with time [closed]

My following questions are related to $\mathrm{pH}$ values in irrigation water in plants. I got a $\mathrm{pH}$ meter and I am measuring the tap water and I get an value about 8. My first question: ...
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55 views

Does burning plastic completely disintegrate it? Accidentally melted some plastic in a BBQ, wondering if pyrolytic cleaning is an option

I accidentally barbecued some plastic today, making quite a mess. It's a cushion for a lawn chair, so I imagine probably some sort of plastic or polyurethane. Rather than cleaning melted plastic ...
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2answers
144 views

Alcohol (ethanol) distillation: mystery congener

I regularly home-distil small amounts of potable alcohol (ethanol), mainly from fermented sugar(s) solutions (the 'wash'). My still is a box standard, $4.5\mathrm{L}$ electrically heated (safety!), ...
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2answers
81 views

A solution is cloudy at lower concentration and becomes clear at higher concentration. Why?

This might be just an "everyday life science" question. I am a university professor but not in Chemistry so please educate me. Today I was adding some floor cleaner formula to water as ...
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1answer
45 views

Hair styling gels and 'liquid gels' - effect of formulation / composition on viscosity and performance [closed]

[Disclaimer: I am aware that this is a very 'first-world problem', 'light-hearted' kind of question, given the health crisis we are still going through. Just to avoid offending anyone, here's an easy ...
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1answer
25 views

Is there a practical re-use value gained by grinding up activated carbon that is spent/saturated?

I want to buy bulk activated carbon for use in a DIY air-filtration set-up, like this, to improve air quality in my bedroom. From what I understand, the relatively larger sizes of carbon media on the ...
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About the acidity of Sultiame [closed]

Why is sulthiam base even hough sulfur can accept the electron by resonance from nitrogen like carbonyl group do?
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About the acidity of phenytoin

Can you explain why phenitoin is weak acid even though nitrogen is base? Does carbonyl group always make structure acid? If this structure doesn't have carbonyl group, would it be base not acid?
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1answer
35 views

Calculate half-life from decay [closed]

I need to calculate the half-life in hours and I got the decay constant in min, how do I do? Which formula do I use? Is it just ln2/decay constant in minutes?
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1answer
99 views

Oxygen manufacturing on Mars

I was reading about the Perseverance lander on Mars and was surprised to find that it has an oxygen manufacturing instrument on board. The oxygen is needed as a part of a binary rocket fuel to get ...
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1answer
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Turning oil into solid for candles [closed]

I added stearic acid to hot vegetable oil and saw it turned to a sludgy, slush material in about 1.5 hours. Is there any other natural additive that I can add to make it more solid in the same amount ...
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1answer
80 views

Zinc screw turning black [closed]

I tried one experiment. I started with ordinal yellow zinc screws. The screws were sumberged in bath of two parts of $4.7\%$ solution of $\ce{NaClO}$ and one part $\ce{NaOH}$. The screws turned ...
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335 views

properties of solution [duplicate]

I had homework with the following question, Eugenol is the active ingredient in the oil of cloves used to relieve toothache. Calculate the boiling point of a solution in which 0.17 grams of eugenol, (...
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1answer
27 views

Diffusion of multiple gases at once

Graham’s law of diffusion states the rate of diffusion between two gases is inversely proportional to their molar masses. Now, this is helpful when we are focused on two gases. But that is rarely the ...
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21 views

Substances with high physical expansive property/expansion after reaction

I want to know if there is a substance/mixture of substances that expands more on some chemical or physical change, than what I've already seen. Elephant toothpaste is a good example, a small amount ...
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1answer
64 views

Why is chloride measurment 0 [closed]

In class we did an experiment to measure chloride in different water sources, including a lake. We used Ion-selective electrode of Ag/AgCl technique. We did the calibration curve and all steps and ...
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0answers
59 views

Hydrogen peroxide on damp clothes left out in the sun [duplicate]

Somebody told me that sunlight is a good bleach for clothes because leaving damp clothes outside in the sunlight will turn some of the water into hydrogen peroxide. Is this true. If yes, then why can'...
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0answers
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Glycerin yield upon saponification of beeswax

I am making a custom grease (castor oil & sodium stearate) that will be suspended in beeswax. I have found that saponifying some beeswax for use in the grease results in higher operating ...
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1answer
30 views

What is left over when water and sodium hypochorate decompose, i.e. household bleach? [duplicate]

I am having some confusion in understanding the decompostion of household bleach. One website says bleach decomposes to salt and sodium chlorate, simple enough. Orther wedsites say bleach decomposes ...
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1answer
2k views

Why do green bell peppers become bitter when cooked?

Why do green bell peppers taste sweet raw, but become bitter when cooked (steamed)? What chemical process is responsible for this? (I don't believe the temperatures are high enough for the Maillard ...
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29 views

Exceeding CPVC in exterior roof coatings

We have a kynar coated metal roof that was primed with an acrylic primer and then coated with a dark blue acrylic elastomeric paint. It was coated during spring with moderate weather. The roof ...
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1answer
701 views

Why can you sanitize paper money notes with a Clothes Iron?

I have some Canadian and British bank notes. The first issue is that I don't know if they're paper or plastic. Second, I don't understand this answer. Why's it safe to iron paper bills? Won't the ...
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64 views

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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0answers
38 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 ...
2
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1answer
201 views

Universal symbols for molar mass, molarity, and molality

This is a really basic (perhaps trivial) question, but I just want to confirm: What are the SI symbols for molar mass, molarity, and molality? For molality and molarity, there is a difference, but I’...
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1answer
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How do I calculate weight percent of BaCl2

A $\pu{0.1036 g}$ sample containing only $\ce{BaCl2}$ and $\ce{NaCl}$ is dissolved in $\pu{50 mL}$ of distilled water. Titrating with $\pu{0.07916 M}$ $\ce{AgNO3}$ requires $\pu{19.46 mL}$ to reach ...
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42 views

Is Polyethylene Glycol always derived from Ethylene Glycol? If not, how does it differ?

I have heard Polyethylene Glycol is derived from Ethylene Glycol, so was doing some research to see how they differ and found this. Now this states that: Polyethylene glycol is produced from the ...
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1answer
73 views

Why does Cody use Litharge? [closed]

In many of the precious metal refining videos Cody (Cody's Lab) takes the sample with the precious metal and puts Litharge into it. After heating it in the furnace, while pouring it out the molten ...
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1answer
54 views

Can potassium carbonate be used to calibrate hygrometers?

Context: In the process of trying to calibrate a number of hygrometers, with Sensirion MEMS electronic sensors, I came across the method of using wet salt: an airtight container will stabilize at a ...
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23 views

Solvent + Photopolymer Waste Disposal

I have a 3L jug of SLA printer-related waste that's been sitting under my desk for a while now and I'd really like to finally figure out how to get rid of it. It contains: Ethanol (primarily) and ...
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0answers
19 views

Adsorbable Organic Halides (AOXs) in bleach residue

I have a question regarding using household bleach, and wonder if someone knowledgeable can help, please? I have used household bleach (sodium hypochlorite, sodium hydroxide, coco alkyldimethyl, ...
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1answer
38 views

Do water filters expire even if underused? [closed]

This filter rates a 3 month lifespan with 1210 liter capacity, but I expect to filter only 300 liters in 3 months. Is it still expired after 3 months - if so, why? What degrades a filter while it's ...

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