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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salts affecting the salinity of water

Wait so I know there are different types of salts like Himalayan salts table salts etc. I was wonder do different types of salts have a different level in salinity when dissolved in water.
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Is dialkyldimethylammonium chloride suitable for sterilization in mycology?

In hobby-mycology 70% rubbing alcohol is commonly used for sterilizing work surfaces, bags, syringes, still air boxes, basically everything. Alcohol however, seems to have some downsides, when it ...
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Will I be cancerous from it? [closed]

My mother used scratched, old teflon pans to cook eggs etc. She said that she scratched it when she washed it up. I know PTFE is inert and it is just go through my body. But I am afraid it might be ...
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Breast milk preserved [closed]

I was wondering if anyone could tell me how to preserve liquid breast milk and make it into a powder to make breast milk jewelry with resin.
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1answer
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What is the best and safest sanitizer to use on food contact surfaces? [closed]

What I am looking for is an answer regarding what sanitizer would be good to use on food contact surfaces while also being safe for the user. From what I have read the USDA allows these sanitizers to ...
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What is C2H33O28? (Empirical Formula to Molecular Formula) [closed]

I'm doing the final question on my homework, and got an issue with this question: "A 76.8g sample of a liquid used as a coolant in automobiles is found to contain 3.7 g of carbon, 5.1 g of hydrogen ...
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4answers
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CO2 and Aeration

I am an aquarist, and I am looking into adding CO2 into my aquarium in order to help plant growth. This is a pretty standard practice, but some of the science spread within the community is ...
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How does the number of oxidation sites in tea tannin affect tooth staining? [closed]

For my Chemistry investigation, I am working on the effect of tea tannins on their tooth staining ability. I was wondering if anyone could help me figure out whether the oxidation sites in tannin ...
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1answer
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Some substances appear white when crushed while others do not. Why?

Calcite crystals are semi-transparent but turn white when crushed. I used to think that it has something to do with the scattering of all wavelengths of light from small particles. But that cannot be ...
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What gas is evolved when using vinegar, hydrogen peroxide, and salt to etch copper, and why?

The question of how vinegar + hydrogen peroxide + table salt can be used to etch copper has been asked before (Full equation when using vinegar, hydrogen peroxide, and salt to etch copper). However, ...
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Understanding sodium hydroxide drain cleaner's exothermic dissolution of aluminum; does the aluminum need to be oxidized before it dissolves?

I'm not a chemist but I remember that the standard HF/nitric silicon etch used in micro-fabrication supposedly worked in two steps; the HF would dissolve the thin SiO2 oxide layer on the silicon ...
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How can sulfur dioxide and nitric oxide be filtered out from a waste incinerator's smokestacks? [closed]

How can sulphur dioxide and nitric oxide be filtered out from a waste incinerator's smokestacks? I also want to know what it looks like after it is filtered out.
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Why when we convert from supersaturated to saturated solution we must use the crystal of the same kind of solute? [closed]

Why when we convert from supersaturated to saturated solution we must use the crystal of the same kind of solute ?
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What happens and what do we observe during this qualitative analysis of bronze? [closed]

What is the observation when we add $\ce{HNO3}$ to bronze followed by addition of dilute HCl and bubbling of $\ce{H2S}$ gas through it. Please tell the inferences as well.
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Oxide caused by running a saucepan with aluminium handle through the dishwasher

Having run a saucepan with an aluminium handle through the dishwasher, the handle is producing a dark grey dusty residue, which I assume is an oxide of aluminium. The dishwasher was run with a typical ...
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How long does it take Freon refrigerant to disappear from a room after an accidental major leakage?

I would like to know please how long does it take Freon refrigerant to completely disappear from a room after an accidental major leakage? Does it stick to surfaces , clothes or walls? Does natural ...
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1answer
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How does a double displacement reaction work? [closed]

When a double displacement reaction occurs with compound AB and CD, what determines that B and C are going to bond instead of A and C?
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1answer
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Why do transition elements specifically show complementary colours? [closed]

When I searched for why the colour absorbed and emitted by coloured transitional elements are different , i found out that the metals absorb the light they need and the remaining is reflected . But ...
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What happens when you run house electricity through salt water?

What happens when you run house electricity (120VAC) through salt water? (with standard copper wires!) Well, in https://youtu.be/dcrY59nGxBg , an interesting experiment was conducted to find out! At ...
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How would I measure the Carbon Dioxide content in Coca Cola over a period of time?

I'm sorry if this is a broad question, but I am trying to plan a simple experiment. I am wondering is there a somewhat simple way of continuously measuring $\ce{CO2}$. I already know the initial ...
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1answer
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Comparing basic strength order of amines

In the above question I was asked to compare the basic strength order. So I did it like this: The Nitrogen in I and II will not participate in resonance so the only effect it could produce is ...
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Difference between liquid and solid stearic acid

I had some stearic acid in solid pellet format. It is slippy and in white color. I used this to make some experiments. I recently notice that some manufacturer can supply liquid stearic acid. I ...
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1answer
67 views

Why does the rusting process start from the bent/squeezed portion of iron?

I have noticed that the rusting of iron starts from the squeezed or bent parts of iron piece. I want to know what is the peculiar reason for the observation that rusting starts from bent or irregular ...
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1answer
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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-...
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Starch Amylase Experiment using Iodine

The starch and iodide test is to detect amylose, a polysaccharide. We add an iodide solution to a sample and observe a color change with the starch; it turns dark blue. I am doing a bio/chem ...
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Antiseptic role of a kerosene

I remember my grandmother putting lots of kerosene on my wound when I was kid and got a huge cut on my finger, as there was no health facility around. Want to confirm if chemists do agree on ...
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Why does table salt (NaCl) dissolve branded food? [closed]

To dissolve branded food from e. g. a baking tray, there is the advice to pour table salt on it and heat it up in a baking oven or on a hotplate until the salt turns brown. From practice I confirm ...
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1answer
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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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1answer
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What is the use of both mol and mass representing the same thing i.e. amount of something? [closed]

A mol is a unit but also has a magnitude. How can a unit have a magnitude? And if mole is used to measure an amount of substance than what does mass measure?
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Which chemical is used in drunken driver test?

Which chemical is used in drunken driver test? Acidified K2Cr2O7 KMnO4 Chromyl Chloride H2O2 On searching on Google, I got the answer as option 1, acidified potassium ...
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1answer
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Is it possible to convert carbon soot/ black carbon in mg to CO2-equivalent? If so, how?

Since global warming is expressed in terms of carbon emissions or CO2 equivalent, can the short lived carbon soot/ black carbon that is produced from incomplete combustion be expressed in terms of CO2 ...
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What does it mean “polyester doesn't breathe”?

Often people say buy a cotton shirt because cotton "breathes" but polyester doesn't. (i.e. it makes you hot sweaty). What is the scientific meaning behind this? How does polyester trap the heat more ...
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Formic Acid vs Formica - Which came first?

Source: Google(Oxford) So, we know that 'Formic Acid' was derived in formic acid in the late 18th century from the Latin word 'formica'. From Wikipedia: Formica is a genus of ants of the family ...
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Why can't you have compressed oxygen and nitrogen in the same tank? [closed]

I just watched a movie about the Apollo missions. They wanted an oxygen/nitrogen atmosphere on the spacecraft. But they said it would be too heavy and expensive to use an oxygen tank and a nitrogen ...
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1answer
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Is it safe to mix calcium carbonate and sodium chloride? [closed]

I know zero about chemistry, and Google has not offered up a plain answer, so I beeseech thee; Is it safe to mix calcium carbonate and sodium chloride to make a simple mouthwash? Calcium carbonate ...
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How can I make a reference humidity environment with NaOH pellets? [duplicate]

I have NaOH pellets at my disposal. Some of the pellets are degraded, but most are not, and I can provide a new batch if needed. I would like to test several humidity sensors in an environment with a ...
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compare and contrast a 2p6 orbital to a 4s1 using quantum numbers to help [closed]

Would you be able to help me understand how to compare and contrast a 2p6 orbital to a 4s1 using quantum numbers to help?
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Why is my washing powder not to be used for pre-wash?

Apologies but I can't find a more suitable stack exchange website to ask this question. I feel the technical answer is chemical in nature so I landed here. For at least the past two years (and on-...
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1answer
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What is the physical state of vitamin E acetate at room temperature and normal pressure

Vitamin E acetate ((+)-alpha-tocopherol acetate) is sold as semi-solid/liquid by Sigma and their safety data sheet gives the melting point as 25 °C. On the other hand, internet databases such as ...
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Ingredients for cleaning optical elements

I have recently purchased a cleaning solution for precision optics which has the following ingredients (amounts were not specified): Ethyl Alcohol Methylethylketon Aqua Diethyl Ether Isopropyl ...
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1answer
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Combustion and pyrolysis of sulfides and organosulfurs

Last week there was a huge fire in french chemical factory Lubrizol, we now know the main products that burnt, to simplify the discussion I extracted a few compounds: isobutyl and isobutene ...
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Coffee Degassing

I roast coffee, and currently package it in plastic bags with one way 'degassing' valves. As soon as coffee is roasted, it starts giving off $\ce{CO2},$ a process which continues for days, and ...
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1answer
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Can aroma compounds travel through metal boards and glass? [closed]

A friend from customs said "if drugs have been in a glass jar for more than a day, the aroma compounds travel through the lid and the dog can detect it, especially after 2-3 days. They can travel ...
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When alcohol is used to sterilize, what about it changes that it can't be re-used? [closed]

I read online that when you use regular household rubbing alcohol to soak something for sterilization purposes, you're then supposed to toss it out. I'm just curious why. Like, as long as there's a ...
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Propylene Glycol to clean vinyl records

I clean vinyl records with an ultrasonic record cleaning machine. Would propylene glycol be good to use as a surfactant in a 1 - 2 % concentration with distilled water? Would it harm the vinyl record?...
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Is propanol 1-2 diol 178 the same as propylene glycol?

I clean vinyl records in an ultrasonic vinyl record cleaning machine the manual states it uses propanol 1-2 diol 178 as a surfactant. I think this is the same chemical as propylene glycol. Is it? ...
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Smoky lights at events - Piped in or a chemistry reaction of some kind?

Was at Dreamhack MTL this weekend and realised that in the whole venue there seems to be just a little bit of smoke in the spotlights and other light sources. You also see that kind of smoke in shows ...
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Electrolytes for Anodization at Home

I'm looking into anodization, and all the people doing it seem to have sulfuric acid as their first choice electrolyte, while others use sodium metabisulfate. Having simple access to exactly neither ...
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1answer
214 views

Why does boiled water have a different taste as compared to cool water? [closed]

I have noticed it frequently and decided to check with some of my peers and friends about this and they too have felt such a thing. The taste comparison occurs after the boiled water is cooled down to ...
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2answers
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Simple every-day-item hydrometer for distinguishing regular soda and diet sodas

When ordering a diet soda (no sugar soda) in a cafe or restaurant I would like to be sure I am getting a diet soda and not a regular sugar-infested soda. Because a regular soda, is through all the ...