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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23 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
56 views

Melting point of objects and food

What is the melting point of egg yolk? Well, generally, when we break an egg, the yolk is in liquid state. After we pour it on a pan, the egg starts to cook and it hardens. My question is, can an egg ...
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1answer
281 views

Is using oxidized aluminium baking forms safe? [closed]

My apologies in advance if this is not the best forum for this kind of question. Recently, I've bought a few non-anodized aluminium bread-baking forms, such as this one: As you can see, there is ...
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1answer
102 views

Calculating the amount of moles from given number of atoms [closed]

Complete the sentences below by doing the mole calculations: i)In $\pu{20 mol}$ of copper(II) phosphate, there are ______$\pu{mol}$ of copper ions and ______$\pu{mol}$ of oxygen atoms. ii)A sample ...
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1answer
156 views

How do i get acetic acid from vinegar?

I'm trying to improve my rocket project, but, since the competition only allows the use of vinegar and sodium bicarbonate as its fuel, I had an idea of using the vinegar in a different way. My plan ...
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1answer
69 views

Can water be generated artificially [closed]

As we all know water that in many of the countries or states we find a lot of water scarcity. I wonder if water could be produced by artificial technology. I searched about this in google but I find ...
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1answer
42 views

Synthesis cost of Fomepizole

Fomepizole is essential drug for methanol poisoning, I observed it cost too much like in 1000's of dollar for couple of ml. Is cost due to patents, or due to synthesis cost,structure of molecule looks ...
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2answers
3k views

The importance of the cold chain in the food and the pharmaceutical industry

There are these everyday things that one should know as a scientist and especially as a chemist, but which never come to light in an academic curriculum — at least not in mine. One such thing is the ...
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69 views

Do hydrogen sulfide and oxygen produce pure sulfur or sulfur dioxide? If both, under which circumstances does each scenario occur? [closed]

If both of the following hydrogen sulfide and oxygen chemical equations can occur, under what circumstances is the harmless pure sulfur and the toxic sulfur dioxide produced? $\ce{2H2S + O2 -> 2H2O ...
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1answer
83 views

What is the chemical formula(s) for liquid potassium-based soap? [closed]

Many places say that liquid soap is generally potassium-based, while the solid stuff is sodium-based. But, while I have found several sites saying that solid soap is usually sodium stearate, I can't ...
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70 views

Tools like Litmus Paper

Litmus papers are used to test acidity and alkalinity of a fluid. Are there other paper-based tools to test for other stuff like dissolved oxygen, presence of toxicity, electric potential etc?
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92 views

What's the usual agent added to discourage drinking of hazardous substances

I've once read somewhere that in materials that are hazardous to swallow, a chemical is used in very small quantities to assure any accidental drinker to retch. This also helps to prevent suicide by ...
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1answer
739 views

Calculating numbers of moles at equilibrium given the volume of mixture and initial concentration of reactants [closed]

The equilibrium between three substances, A, B and C Is shown below. $$\ce{A(g) + B(g) <=> C(g)}$$ Initially there were $\pu{0.1 mol}$ of A and $\pu{0.2 mol}$ of B in the reaction mixture. A and ...
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1answer
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Regarding comparison of ionization energies [closed]

Why is the ionization energy of $\ce{Mg^2+}$ greater than the ionization energy of $\ce{Ne}$ (neon)? My teacher said the answer was $\ce{Mg^2+}$ but I have no idea why as my general knowledge tells ...
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68 views

Separation techniques [closed]

I need to identify separation processes that begin with each letter of the alphabet. I am missing an example for B, J, K, O, Q, X, Y, and Z. Any help will be greatly appreciated. Thank you.
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How can I solubilize fragrance oil into polyvinyl acetate/clear glue?

I'm a high school student who makes slime for fun, using polyvinyl acetate (PVA) glue and borax as my main ingredients. Earlier, I had the idea of adding fragrance oils to clear glue. However, because ...
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1answer
59 views

Why doesn’t it burn? [closed]

In this video by Chatzida - 11 Fascinating Chemistry Experiments (Compilation) there’s an experiment where they light a bank note on fire, but it doesn’t burn. Why doesn’t it burn?
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2answers
173 views

Why and how is rust forming on moon?

note: @Mithron's proposed duplicate Why can't rust form without water? does not have anything about the conditions on the Moon, so no, it's not a duplicate. Several popular news articles mention ...
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1answer
149 views

Acids and Bases (Spectator Ions Identification)

In an acid reaction with water, or other solvents, how do we know which atom(s) from a compound reacted with that solvent are the spectator ions? Are they the ones soluble in the solvent? Is the way ...
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0answers
98 views

Cleaning silicone molds

I am a musician who wears custom-molded in-ear monitors made of silicone. They are rather expensive so I need to constantly clean them and carefully. I was told not to use isopropyl alcohol (96%) ...
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2answers
1k views

Why does ethylamine have two infra-red spectra? Are both correct?

The one I have in my textbook is this: Shouldn't the first trough at $3500$ to around $3000$ mean that it's an $\ce{O—H}$ group with a $\ce{C—H}$? And then the other trough at $1700$ be a $\ce{C=O}$? ...
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2answers
56 views

rust caused by salt solution & stainless steel

I am not a chemist and I could really use some help for a practical case. I am fermenting vegetables (cabbage, onions, carrots, etc.). I recently switched from glass and ceramic vessels to stainless ...
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1answer
58 views

Why do batteries drain so quickly if they are forced to draw more current than they normally do?

When a battery is pushed to use twice the current it normally does, it lasts for less than half as long before dying... In fact, batteries often come with a 'C' rating that gives you an idea of how ...
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2answers
40 views

Composition of arcanite (potassium sulfate) agricultural grade. Potassium content of random drawn sample?

I bought potassium sulfate from this source: Potassium sulfate granulate I'm using it as a potassium additive in hydroponics. The composition is listed as K2O = 50%, S = 18%. This equals about 41.5% K ...
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1answer
156 views

Is precision measured by significant digits in chemistry?

I was recently asked this question: An experiment is done 3 times, with a different measuring tool used for each time. The results of the experiment are 1.39, 0.9, and 1.0 (all centimeters). Which ...
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1answer
3k views

Why is heroin a more potent drug than morphine, despite having a similar structure?

The structures of heroin and morphine are quite similar, with heroin being formed by acetylation of morphine: Why is heroin so much more potent than morphine, when their structures are so similar? ...
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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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1answer
265 views

Can mixing too much citric acid and bicarbonate of soda create dangerous levels of carbon dioxide in the home? [closed]

I am not a chemist. In order to clean hard limescale in my toilet, I usually put down half a cup of bicarbonate of soda and half a cup of citric acid. Someone told me this is dangerous because it ...
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1answer
48 views

Formation of Calcite from Calcium carbonate

So, in lab we are forming the different polymorphs of calcium carbonate. It required us to age the sample that was prepared for the formation of calcite for one week. This sample mixture was suspended ...
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0answers
134 views

Freezing point of solution of Water, Ethanol and Sugar (aka, Limoncello)

I'm looking for a diagram of the freezing point of a water solution depending on its content in sugar and ethanol. More colloquially, I want to know how to balance alcohol and sugar so that my ...
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19 views

How does concentration of H3O effect the concentration of OH [duplicate]

I know that [H+][OH-] will always equal 10^-14 in 25c water, however, I would like to know why that is, like if there is an extremely small amount of both H+ and OH- in the water how would increasing ...
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0answers
48 views

Adding acid to hard water to prevent limescale deposition

Acid is commonly used to remove deposited limescale. If I wanted to prevent build-up of limescale in appliances, would it make sense to add acid to the water in the first place if that doesn't harm ...
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2answers
223 views

How to neutralize the stink of decomposed fish?

Recently I discovered for myself an interesting way to easily produce home made plant fertilizer that is quite effective (tested myself on the plants). It's fish emulsion (so can be used also in a ...
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0answers
60 views

How much oxygen is used up by the browning of an apple?

This is inspired by a recent popular question on Cooking. Let's assume that I take some apples, cut them up, and place them in a hermetically sealed container. Then the container goes into the fridge. ...
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2answers
138 views

Controlled burn with colored flames (Gender Reveal) [closed]

Is there a single solvent that can dissolve chemicals/elements that when burned, will produce the color of its respective chemical/element? If so, what chemical/element can be dissolved in this ...
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1answer
38 views

Creating 100mg/L aspirin solution

I plan on creating 100 mL of 100mg/L aspirin solution by dissolving 10 mg of pure aspirin powder in 100 mL of buffer solution (of different pHs). Problematically, aspirin doesn’t tend towards ...
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1answer
136 views

What exactly is peptone (tryptone?) and why does it not get precipitated?

According to Wikipedia Peptone (also called Tryptone) is a form of amino acid that has been treated by stomach acids. According to Google it also stays in solution when treated with acids or heat. Why ...
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0answers
636 views

What happens when Isopropyl alcohol expires?

My isopropyl alcohol is expired. What happens when it expires? Does it break down into something else? Can I still use it to clean or sanitize?
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0answers
57 views

Remembering Chemical formula [closed]

How do you all remember the name of chenical formula of Glucose, Lime, Vinegar ... etc. becasue these substances have big big chemical formula. So, How do I remember their chemical formula?
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1answer
61 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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4answers
312 views

Can you steam clean your range hood, by adding dishwashing liquid to boiling distilled water?

My grandparents physically can't remove their Sakura R-727II range hood that lacks any filter. Because of COVID-19, no handyperson can visit their house. But their range hood is now clogged and ...
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1answer
1k views

Why are all 3 of propane, butane and isobutane used in deodorant sprays?

Here are the back ingredient labels of a few popular commercial alcohol-based deodorant sprays. As one can clearly see, they all have many things in common, but the 3 which are of importance in lieu ...
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1answer
177 views

Biodegrability of straight chain and branched chain detergents

From NCERT Chemistry: Textbook for class XII, Part II [1, p. 461]: Main problem that appears in the use of detergents is that if their hydrocarbon chain is highly branched, then bacteria cannot ...
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1answer
47 views

Vinegar reaction [closed]

please could someone help me. I poured white vinegar over a small hole where ants where coming out in my patio steps. There was some sand on the step and it started to bubble and fizz. We have been ...
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1answer
69 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 ...
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1answer
61 views

Is it safe to launder clothing that had a small amount of isopropyl alcohol on it? [closed]

I just have a safety question. I work in a clerical position at an outpatient office located in a hospital. Since mid-March when the pandemic began to hit our state, we’ve been wiping things down in ...
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3answers
145 views

Why water cools from outside to inside?

It is a well-known fact that Water kept in a container, on cooling, results in freezing with initially at the circumference of surface (1D), then on the surface (2D) and then throughout the volume (...
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1answer
166 views

molecular orbital theory explaining molecular orbitals [closed]

i am a high school student,,and i am confused in molecular orbital theory,,,my confusion is that how bonding and non bonding orbitals are formed at the same time my teacher taught me that the two wave ...
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0answers
229 views

Why does a sealed plastic bag of dish soap, water and air expand when shaken?

I've noticed that when I put dish soap, water and a little air into a sealed plastic bag, and then shake the mixture, it forms soap suds and the bag expands significantly in volume. Why does it expand?...
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4answers
9k views

Can we fill potato chips bags with a gas other than nitrogen?

I understand that we fill potato chips bag with nitrogen to prevent oxidation. But why do we use nitrogen, instead of neon or hydrogen or something else? My first guess is that nitrogen is lighter ...

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