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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42 views

Looking for linear non polar compound which is used heavily due to its boiling or melting temperature or its density [closed]

So my son was given an exercise to find some linear non polar compound that is used heavily due to convenient boiling or melting temperatures or its density. Having no training in chemistry I have no ...
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2answers
81 views

Memory foam chemicals from pillow spoiled bed and rendered it useless [closed]

I have recently purchased a memory foam pillow and in two days i ve experienced breathing problems and stomach problems and eyes irritation due to the harsh toxins in it and I returned the memory foam....
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1answer
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How can they “wash away” the caffeine from Nescafe Gold to produce that “de-caf” version?

I buy and drink Nescafe Gold all the time. I also buy the smaller "caffeine-free" version of the same product. It tastes very differently, which makes me assume that the caffeine does have a lot of ...
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0answers
116 views

DIY chemistry - Calcium from bone [closed]

I've gotten really into this subject lately from people who make their own cleaning agents and I was surprised how simplistic (although time consuming) everything was. I am interested in making ...
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1answer
66 views

Why fibres are strong only in one direction? [closed]

Why fibres are strong only in the direction they are oriented?Why they break if we pull at right angle to their orientation? Here each blue line represents combination of polymeric chains.
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2k views

Why does a paracetamol tablet clean an iron [closed]

If you burn some clothes on an iron and some residue sticks to it, rubbing a paracetamol tablet over it (while it's hot) surprisingly removes the residue and cleans the iron. Please explain why this ...
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1answer
144 views

Why are borates more stable than aluminates? [closed]

In the differences between Boron and Aluminium, it is given that boron forms stable Borates and Aluminium forms unstable aluminates . Please explain the stability of the 2 compounds.
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1answer
49 views

Is “family” synonymous with “group”? [closed]

Is using the term "family" strictly correct when we mean a group of the periodic table or is it just in general use (and should perhaps be discouraged in favour of using "group" exclusively)? At my ...
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How much of Sodium dichloro-s-triazinetrione dihydrate should I use to replace bleach? [closed]

I am trying to determine how much sodium dichloro-s-triazinetrione dihydrate powder I should add to water to create a dilution that can be injected into my water supply to react with the Hydrogen ...
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0answers
38 views

UV-spectrophotometer analytical method for doxycycline hyclate and tylosin tartrate powder [closed]

I am trying to detect tylosin tartrate from the mixture of doxycycline hyclate using $\pu{0.01 M}$ $\ce{HCl}$ as solvent, and waveleghth of $\pu{290 nm}$ for detecting tylosin tartrate in UV-...
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2answers
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Water becomes cold on mixing energy drink [closed]

I noticed that the temperature of water decreases noticeably when I mix an energy drink (Glucon-D) in it. The ingredients mentioned on the pack are majorly glucose (52%) and sucrose (45%). I believe ...
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1answer
166 views

Independant variable for Asprin pill titration with NaOH solution [closed]

I am assigned to do an independently designed chemistry experiment for school. I want to do titration of Aspirin pills with NaOH solution using Phenolphthalein as indicator. I am struggling to find ...
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Formic acid and carbon monoxide outgassing from latex mattress

Formic acid is used as a coagulant to turn rubber tree sap into latex, formic acid also decomposes to carbon monoxide. Does this mean things like latex mattresses have the potential to off-gas carbon ...
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1answer
21 views

salts affecting the salinity of water [closed]

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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25 views

Is dialkyldimethylammonium chloride suitable for sterilization in mycology? [closed]

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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57 views

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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5answers
387 views

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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1answer
93 views

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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0answers
396 views

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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1answer
272 views

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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0answers
18 views

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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2answers
209 views

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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1answer
38 views

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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0answers
54 views

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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2k views

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
47 views

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
66 views

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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0answers
153 views

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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5answers
4k views

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
779 views

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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0answers
96 views

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
80 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
48 views

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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19 views

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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1answer
470 views

Antiseptic role of kerosene

When I was kid and got a huge cut on my finger, I remember my grandmother putting lots of kerosene on my wound, as there was no health facility around. I want to confirm. Do chemists agree on the ...
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58 views

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
164 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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1answer
33 views

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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1answer
233 views

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 dichromate, but my questions ...
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1answer
45 views

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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0answers
618 views

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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1answer
250 views

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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54 views

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
75 views

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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0answers
18 views

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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1answer
398 views

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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237 views

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
517 views

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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1answer
43 views

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
44 views

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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