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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348 views

What is PPM in terms of air concentration?

When they say the $\ce{CO2}$ concentration is $\pu{350 ppm}$ what does this actually mean? Does this mean that if we took a sample of air say $\pu{1 m3}$ then $\pu{350 mg}$ of that cubic meter would ...
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1answer
50 views

Does coffee have the ability to dissolve less sugar into it than water?

Like water can absorb such and such an amount of sugar, can coffee absorb less as it already has coffee in it.
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71 views

Test for the dissolved iron [closed]

Ok there’s this question on my chemistry review that I can’t figure out. It states: A sample of well water is known to contain a high concentration of iron. what solution could you use to test the ...
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3answers
4k views

Does a smell imply particles or chemicals in the air? [duplicate]

(I know little science so please help me if I'm in the wrong place or if my question needs editing. I could use help with tagging, for example.) If I can smell something then does that mean there are ...
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14 views

Chemical interactions occuring when a ball smashes into a wall

I was just wondering. When a hard metal ball smashes into a concrete wall, such as during the tearing down of a building, what are the chemical interactions, in terms of electrostatics, that take ...
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4answers
165 views

Why is petrol also called octane?

Why do people commonly use octane as a synonym for petrol (gasoline)? Isn't petrol a mixture of hydrocarbon distillates--not a pure substance?
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1answer
47 views

Quantity of base needed to neutralise litre of 36% HCl?

Sorry for asking a basic chemistry question. I last did this kind of chemistry at school about 30 years ago and I don't have confidence that I'd get it right from first principles :) Short version: ...
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27 views

Apple Cider vs. Cleaning Vinegar

My grandparents stumbled on some cheap Heinz Apple Cider Vinegar while cleaning their house. Ingredients: Made from the juice of apples diluted with water to a uniform pickling and table strength ...
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1answer
27 views

Do harsh soaps clean clothing more powerfully? [closed]

My grandparents chanced on some cheap soap in their house while cleaning. They obviously won't use it to shower, but does the abrasiveness mean that they're more potent? To wit, what exactly do the ...
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1answer
58 views

I need some help on this Chemistry question can any one help please!! I need to find the cost of a single atom of aluminum [closed]

A 75 ft2 roll of aluminum foil costs $3.79. A 12"x12" pieces has a mass of 1.0 g. How much does a single atom of aluminum cost, in dollars? i need to show all my work i am so lost.
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Aluminium foil on windows: what is the residue, and how to remove it?

I put aluminium foil on some windows' glass pane wetted with plain tap water, as a typical trick to stop sunlight. After 5 days, I removed the foil to find some kind of whitish pattern on the glass. ...
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57 views

What governs the amount of smoke produced by an extinguished match?

First Chemistry question, so apologies if this isn't quite in the spirit of this SE. I have noticed that when extinguishing a lit match by blowing it out, the amount of smoke produced can vary widely....
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70 views

Every liquid is water [closed]

Is it that every liquid we see is water, with more or less of x substance? Example: urine is water with salt and minerals
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156 views

What component(s) of instant coffee make it deliquescent?

If I put small, separate piles of instant black coffee powder, sugar, powdered creamer, and even something very ionic like table salt out in humid air and come back in a few days, only the instant ...
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3answers
3k views

Is there such a thing as a “minimal soap” molecule?

Wikipedia's Soap gives sodium stearate as an example of soap, and apparently I've been eating it: Sodium stearate is the sodium salt of stearic acid. This white solid is the most common soap. It is ...
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2answers
72 views

nickel-copper fabric: shielding viability after being subjected to weathering

I know the solution can be as simple as a well-sealed garbage can, but I am contemplating making a more malleable fabric based faraday-cage-esque contraption. The plan is to use nickle-copper fabric ...
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0answers
43 views

How to align povidone-iodine molecules in order to look for optical polarization

In this answer I mention how early polarizing filters (e.g. sunglasses) were made by doping a polymer with iodine atoms and then stretching the film to orient the polymer molecules. Electrons donated ...
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1answer
73 views

Celsius to Kelvin [closed]

A temperature conversion question asks the following: "The temperature of a sample of a substance changes from 10°C to 20°C. How many Kelvin degrees does the temperature change?" The correct answer ...
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2answers
127 views

Why does a balloon filled with helium float if there is so much more air on top of it than below it? [closed]

Also what about Newton's third law? Wouldn't buoyancy be flawed because a balloon also displaces the air that is on top of it thus a downward force?
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202 views

Diluting topical cream (10%)

I need to dilute a face cream with 10 % active ingredient to 2.5 % and 5 % but I am confused as to how. I looked into the $$c_1V_1=c_2V_2$$ and $$\text{concentration of a solution}=(\text{amount of ...
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1answer
207 views

Why was lime used by the Nazi's?

I am reading a book (Into That Darkness) about the Nazis, where there is the following passage: causing unimaginable suffering to the deportees who were either left waiting, naked and without food ...
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1answer
70 views

Aluminum and aluminum oxide

I have a new grain mill that I am hesitant to use because the rollers are anodized aluminum. As I understand it the anodized aluminum is actually aluminum oxide and supposedly non-toxic. I realize ...
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1answer
47 views

Function of 'organic' vs regular pipe cleaner

Recently, I needed to buy some pipe cleaner, as sometimes even with care hair and other detritus gets lodged so deep down the shower drain that it is not possible to get it out. I always try to avoid/...
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2answers
58 views

Materials used in cooktop heating element, and reason for black appearance

I have been interested in the structure of heating elements/coils used in cooktops. I am referring to something such as in the following picture: I have a cooktop at home with such elements, and at ...
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2answers
700 views

Is flour or baking soda really suitable for extinguishing grease fires?

I think most have heard the advise that you should put flour (or baking soda) on a grease fire to absorb the oil before. While this is certainly better than using water, I'm skeptical. For starters ...
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132 views

What is a “tri-salt polymer” as described by this product that eliminates and prevents mold?

This answer mentions an anti-mold product called Concrobium Mold Control. The FAQ linked on their website says: Q: I see Sodium Carbonate listed on the label. Is Concrobium Mold Control just Sodium ...
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1answer
2k views

Can superglue (cyanoacrylite) be thinned with acetone and still harden?

I'm looking for something with an extremely low viscosity to use as a binder for cold casting iron oxide with very fine detail (it's to make a slotted winding core for an electric motor with $\pu{1mm}$...
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2answers
3k views

Why does lavender oil dissolve plastic?

A few weeks ago I decided to harvest the lavender in my garden and put it through a still to extract the essential oils. The still in question is essentially just an air cooled condenser. I collected ...
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1answer
3k views

Full equation when using vinegar, hydrogen peroxide, and salt to etch copper

What is the full chemical equation when you use the following reactants to etch copper: vinegar / acetic acid (5%) $\ce{CH3COOH (aq)}$ hydrogen peroxide (3%) $\ce{H2O2 (aq)}$ salt $\ce{NaCl (s)}$ ...
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1answer
230 views

Is sodium “also known to turn purple and combust (like lithium),” when exposed to water?

I understand that indicator solutions can change color depending on pH, but the following statements in the Phys.org article Super cheap earth element to advance new battery tech to the industry has ...
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1answer
59 views

What chemicals are often confused for different chemicals? [closed]

Recently I asked a similar question on Chinese SE: Why would Antimony (Sb) and Aluminum (Al) be confused? It seems, though, that this is by no means a Chinese phenomenon. The Wiki page for Tin ...
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1answer
50 views

Compensating for hardness in aqueous NaOH solution?

I'm trying to strip the seasoning (polymerized oil) off a carbon steel skillet. Following online instructions, I've prepared a lye solution, using tap water, 2.5% concentration by weight, which ought ...
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3answers
744 views

Can 32% hydrochloric acid be stored in a milk jug (HDPE)?

Can $32\%$ ($20$-degree Baume) hydrochloric acid (typically found as 'muriatic acid' in hardware stores) be stored in a milk jug? I have read that acids can be safely stored in polyethylene bottles. ...
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2answers
319 views

How to purify sodium chloride table salt that contains sodium ferrocyanide

I wish to obtain pure sodium chloride crystals from ordinary table salt. But all proprietary table salts seem to contain the anti-caking agent sodium ferrocyanide which I should like to remove.
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2answers
121 views

Why is cooking not potentially lethal? [closed]

Even the simplest ingredients used in cooking, such as a banana, contain hundreds of chemical compounds. When we cook we mix several of these ingredients and apply heat, which makes a perfect ...
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1answer
567 views

Rules of naming ionic compounds

While brushing up on my Chemistry basics, I came across a topic about naming ionic compounds. It is a question regarding Roman numerals. It says "Roman numerals should not be included in the name ...
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1answer
985 views

Classification of the Inside of a Grapefruit

In the text Chemistry: The Central Science, the inside of a grapefruit is classified as a homogeneous mixture. Unless I’m missing something, to me it would be a heterogenous mixture owing to pulp, ...
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1answer
82 views

Is *rinsing* (after washing) with cold water is as efficient as rinsing with hot water?

Let say I have, a dishwashing soap, plenty of cold water (5 °C) and only have 2 L of hot water (60 °C) to clean a t-shirt with oil stains. Should I use the 2 L to wash the t-shirt and then the cold ...
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1answer
28 views

Effervescent in mineral spirits?

I'm shooting video of paint moving in mineral spirits. To make for a little more action, is there a household granular/solid I could add to the mineral spirits that would gently effervesce ala alka-...
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1answer
100 views

Why does the liquid in an Oralmedic stick flow uphill after I turn it upside-down?

I was experimenting with an Oralmedic stick, which is basically a cotton swab with a hollow stick that has liquid medicine inside, and observed something very unexpected. I followed the usage ...
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2answers
6k views

What causes the “rotting fish smell”?

Rotting fish seem to give off the same (very pungent) kind of smell, regardless of the kind (salmon, seabreen, tuna, etc). What exactly is it that's responsible for this unique smell? (Though I've ...
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0answers
68 views

Bio dishwashing liquid affecting kitchen pipes?

I have a query regarding bio washing-up liquid. We've recently experienced slow flow in our kitchen drain pipes, and the plumber whom we asked to have a look at them showed us there was some non-...
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1answer
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Stoicheometry questions: I've been having a bad time not understanding the questions and how the steps are to achieve the answer. please help [closed]

Cetyl palmitate (C32H64O2) is a waxy solid and is the main component of spermaceti, the once prized wax found in the skull of sperm wales. The heads of sperm whales can contain up to 1900 L of ...
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1answer
703 views

After boiling water in an electric kettle, should I empty it?

(I'm reposting my question from Physics SE where it got closed for being off-topic, but chat tells me that it might be on topic here.) In the office I'm working in, there's an electric kettle for ...
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50 views

Disposal of methanol solution [closed]

Can I add a 4 L bottle of methanol solution with 0.1% formic acid into a drum containing non-halogenated waste?
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1answer
44 views

Are detergents more efficient if poured into more water?

Let's say, I am washing my cloths "by hand". My steps would be: I take a basin of about 20L I pour into it some water I pour my detergent (the required amount, about a spoon) and a bit of bleach ...
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0answers
1k views

Citric acid rust removal and neutralization

I'm currently removing rust from steel with citric acid dissolved in water. I generally use a wire brush as the final treatment to remove any surface rust that the acid loosened up. The pieces under ...
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0answers
29 views

I mixed Miracle Gro fertilizer and Soil Mender Liquid Fish in my hose-end sprayer to save time. The mixture became very cold. Why?

Miracle Gro = Ammonium Sulfate, Potassium Phosphate, Potassium Chloride, Urea, Urea Phosphate, Boric Acid, Copper Sulfate, Iron EDTA, Manganese EDTA, Sodium Molybdate, Zinc Sulfate. Soil Mender ...
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2answers
82 views

What is the chemical reaction between coins (copper and nickel) and polyvinyl chloride?

I often carry coins in a cheap plastic sandwich bag. A green solid soon appears. Is it copper oxide? How is the polyvinyl chloride greatly accelerating the reaction? Are there other chemicals being ...
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1answer
147 views

Maximum possible hypochlorite concentration from electrolysis?

For reference, "electrochlorination" is just the electrolysis of a simple solution of water and table salt (NaCl) followed by reintroducing the chlorine gas produced. But, the Wikipedia article on "...