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 to find out equivalent to about 2 mg of sodium in sodium metabisulphite?

How to find out equivalent to 2mg of sodium in sodium metabisulphite? Please help to find out this problem.
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Are there kinds of lycopodium powder that do not have the hydrophobic and flammable properties?

I bought some lycopodium powder online. It came in a packet labelled ''lycopodium powder dragon's breath fine''. It is a very fine yellowish powder. I bought it purposely to experiment with for fun ...
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Thermochemistry Questions Help [closed]

A student dropped 1.74g of magnesium in a coffee cup calorimeter. Inside of the coffee cup there was 328 mL of 1.77 mol/L HNO3. This was initially at 18.6 degrees Celsius. If the molar Enthalpy of the ...
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Window glass to keep room cool

As i understand, A glass room gets hot as glass traps IR waves. IS it possible to create glass which let IR waves generated inside room and keep room temperature down? To make clear ,I am asking if ...
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What happens to Quats when they are spilled on the floor with bleach nearby?

I was cleaning up my room last night and used Swiffer Wet Sheets for the job. When I was storing the box back up on a cupboard, I accidentally let some of the liquid spill out onto the garage floor. ...
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What's the difference between Zinc Ascorbate and Zinc Gluconate?

I've been looking at a dental product for pets, called MAXI/GUARD Oral Cleansing Gel and it states it uses zinc ascorbate/taurine, however in the ingredients I found elsewhere it instead lists zinc ...
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What does the term 'by mass' mean with respect to different contexts?

I've seen the term 'by mass' being used in various sorts of contexts. Some, while explaining the law of definite proportions say, the 'same proportions by mass', some say 'constant chemical ...
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kinetic energy of ejected electrons [closed]

Barium has a work function of Φ =2.520 eV. If 350.0 nm light is directed at the metal, what is the kinetic energy of the ejected electrons?
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Test agent formula help for detecting water in diesel or kerosene fuel [closed]

I am trying to create a powder for use in a test that indicates water in diesel or kerosene. The power should dissolve into the test container of diesel or kerosene but if water is present the agent ...
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What the difference between these health-wise safe active ingredients? [closed]

I'm not a chemist. I just read different articles and try to make sense to myself. As I understood Hypochlorous Acid is naturally produced by our white blood cells. Therefore, it's safe (health-wise) ...
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Purification of contaminated compounds [closed]

How would you purify contaminated Benzoic acid + iron fillings + organic molecules
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Why is Hydroxide OH negatively charged [closed]

I am confused as to why OH has a negative charge, between all of the bonds and the free electrons there are 8 electrons and there are 9 protons (8 from the oxygen and 1 from the hydrogen) there are 9 ...
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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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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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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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How does the noble gas configuration work for ions?

I was recently reading a self-study book and learned about the Noble Gas Configuration of atoms. However, I get confused when we try to write out the Noble Gas Configuration of ions. The thing I'm ...
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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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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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62 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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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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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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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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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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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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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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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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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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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 highschool student who makes slime for fun, using PVA glue and Borax as my main ingredients. Earlier, I had the idea of adding fragrance oils to clear glue. However, because they aren't soluble, ...
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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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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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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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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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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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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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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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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
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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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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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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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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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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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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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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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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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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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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
111 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
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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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