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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Calcium chloride as a drying agent for solutions

I'm aware of the reaction Calcium chloride has with water vapour and how it can therefore be used as a good and inexpensive drying agent but could that be applicable for solutions? For example if ...
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Hazard and precautionary statements

Is there a scientific database where one can find all the H and P statements for all chemicals? I would like to avoid using wikipedia but I can't find a database from a trusted source.
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Chemical Volcano- Experiment

In a science exhibition in 2011 , I and my friend made a volcano that used vinegar and baking soda for the 'effects'. There was another group that made volcano too and they had brought their own ...
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Grade-recovery curve

How would I get the grade for each recovery point in order to plot a grade recovery curve? The only information I have is that the feed grade is 10% valueite (the wanted mineral) and that the ore ...
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The influence of carbon dioxide concentration on microalgae growth rate

I'm doing an experiment on the influence of carbon dioxide concentration on microalgae growth rate. In this experiment, I have CO2 cylinder and gas mixer. How to decide CO2 concentration by using both ...
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I need some quick help with my homework, since it's due in 2 hours!! Thank you! [closed]

These are the two questions. Any help is very much appreciated!
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Which one of the following reactions is a single-replacement reaction [closed]

Which one of the following reactions is a single-replacement reaction? Group of answer choices \begin{align} \ce{Zn(s) + Cu(NO3)2(aq) &-> Cu(s) + Zn(NO3)2(aq)}\tag{1}\\ \ce{2 Fe(s) + 3 Cl2(g) &...
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Removing wood stain from a ceramic surface

I have a bathtub that I accidentally poured wood stain into. Now the stain is all over the white ceramic surface of the tub. I tried using bleach but it didn't do anything. I'm curious if there is a ...
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Pool Chemistry 1 question about PPM [closed]

A pool is treated with calcium hypochlorite pool shock. If Ca(OCl)₂ has 50.0% available chlorine by mass, what ppm chlorine increase will result from the addition of 2.00 kg of pool shock to a 40.0 x ...
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Does partially/completely removing solid shift the equilibrium?

For the reaction: $$\ce{P4(s) + 5O2(g) <=> P4O10(s)}$$ Let's say the reaction is at equilibrium, and SOME $\ce{P4O10(s)}$ is removed from the reaction. Will that affect equilibrium? My ...
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Why does dissolved oxygen concentration decrease with increasing atomic number of metals?

I am looking at how metal ions ($\ce{Fe^2+}$, $\ce{Ni^2+}$, $\ce{Cu^2+}$, $\ce{Zn^2+}$, and $\ce{Ag+}$) affect the biochemical oxygen demand in water and used the Winkler's method to find out the ...
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How do we know orbitals of atoms and elements exist? [duplicate]

How would we know if we have never experimentally seen them?
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What spectrum of light does penetrate fog?

I am wondering about what spectrum of light does penetrate fog the best. I would like to know if IR light penetrate fog better than UV light and why is that. Thank you for answers.
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Chemistry Precise [closed]

What would be more precise to find the volume of a cube of metal and why? 1: Measuring cube with a ruler and calculating volume 2: Calculating the water displacement of the cube with a graduated ...
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Why is isopropyl alcohol (isopropanol) used in rubbing alcohol instead of 'regular' propanol?

Is isopropanol (or 2-propanol) a better solvent than ordinary propanol (or n-propanol, or 1-propanol)? This is strongly implied, from what I have read, but I can't seem to find a place that distinctly ...
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Effect of free sulphur on flammability/flash point of extracted ethanol

I am working on a project where ethanol is being removed from wine by spinning. The resulting product will also contain 90ppm of free sulphur. I would like to know whether this will have any effect ...
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32 views

Effects of dispersed nitrous oxide on the body

I'm not sure if this question would be more appropriate in Biology SE, but I wanted to know if the euphoric effects of $\ce{N2O}$ are limited to when it is concentrated in the gaseous phase, or ...
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What is the best soft material to withstand prolonged contact with high heat metal?

I want the look of a leather belt around the outside of a metal fire pit (stainless steel). I thought that thick leather would work since it's used for forge gloves, but the prolonged exposure just ...
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1answer
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Can freezing temperatures cause chalk to fragment?

I am a physics student, with little experience in chemistry. I am researching for a project which involves freezing and its capabilities on humans and different minerals like chalk. I have been ...
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Gummy handlebar grips after one time isopropyl use

Why did one time use of spray-on isopropyl rubbing alcohol 70% USP, make dirty rubber handlebar grips feel gummy after?
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1answer
52 views

Why do bubbles form and stay when I shake a bottle of tea?

I have some bottled tea and I noticed that shaking it creates some foamy bubbles that stay for quite a while (at least half an hour if not more). I originally thought it has something to do with my ...
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1answer
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Is selenite (hydrous calcium sulfate) dangerous when you grind it up?

I was wondering about the safety of a specific mineral, Selenite. From my research, I have read that selenite is the crystalline form of gypsum, which is hydrous calcium sulfate. I was wondering if I ...
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How efficient is Zinc Acetate as an Oxygen absorber?

I used to work in a microbiology lab and they used zinc acetate as O2 absorber for the anaerobic chamber. Was this an efficient way to scrub O2 from the air? I am asking because I want to make an N2 ...
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Is making play dough without cooking it a chemical or physical change? I have found sites that say both!

The recipe has flour, salt, warm water, vegetable oil, and food coloring. Under the "science" it states that..."When you put all the ingredients for play dough together and knead them,...
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2answers
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CO2 Catalytic Converter

We all know how CO2, as a greenhouse gas affects the climate and causes global warming. I was thinking of a small device, which could be attached to the exhaust pipe of an automobile. It could convert ...
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Stirring bar cleaning

I have a small question concerning the stirring bars cleaning. I use mine in BOD test wastewater for 5 days and I want to clean them so my question is can I soak them overnight with sodium ...
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1answer
145 views

Help with two containers problem, Xenon

In two containers we have Xenon. The volume of the first container is 2780 L, temperature is 300 degree Celsius, and n = 200 mol. Volume of the second container is 4000 L, temperature is 1300 degrees ...
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Exactly how the subscripted numbers are given to the different types of boron sheets (borophenes)?

I was going to start a project on Borophene, and hence I was going through a review journal, 2D Boron: Boraphene, Borophene, Boronene, where they have said many types of borophenes had been proposed. ...
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How is lapping slurry made?

I've recently gained an interest in the whole topic of lapping and the creation of flat surfaces. Lapping is done in different ways, but the one I'm interested in is essentially just rubbing 2 ...
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1answer
63 views

How to make foggy and cloudy plastic fully transparent?

I used sandpaper of different grits to sand the surface of plastic. The surface is smooth but it looks dull after sanding. I read that one could use toothpaste to remove the foggy look but it did not ...
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1answer
49 views

Why does charcoal not produce smoke when heated?

As I understand; the reason we have smoke in a fire is because the heat causes wood (or whatever material is burning) to dis-integrate, the disintegrated components react with oxygen to create more ...
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1answer
60 views

What concentration is phenolphthalein indicator ? 1% or 0.1%

I read some information about phenolphthalein indicator, some websites suggested phenolphthalein indicator of 1%, others mentioned phenolphthalein indicator of 0.1%. What is the difference of both of ...
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1answer
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Electron Configuration confusion

I'm getting so much conflicting information!! When I practice electron configuration and google to check my answers I often see configurations that list the 3d orbital before the 4s orbital (...
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How do I understand exactly how hazardous a material is based on SDS?

I work with a lab occasionally and get asked often if a chemical is safe to breathe, how hazardous is it if it lands on skin, etc. For the most part, I'll try to go to an SDS and look it up. The ...
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420 views

What factors promote honey's crystallisation?

Honey is a complex mixture containing, probably, more than hundred compounds. I understand that the % of those components will affect the crystallisation. However, I am wondering what factors may ...
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1answer
162 views

Why is the boiling point of sugarcane juice lower than the boiling point of water?

As the boiling point is a colligative property, one would expect that the boiling point of sugarcane juice should be higher than pure water because Sugarcane juice contains water (75–85%), non-...
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real meaning of osmotic and turgor pressures

I am a high school student and I am very confused in how we define osmotic pressure? Osmotic pressure is defined as the pressure required to stop the diffusion of solvent into a solution by applying ...
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2answers
67 views

Does carbonation permanently increase the acidity of soda water?

If you carbonate water, and then expose the resulting soda water to the atmosphere and wait until it goes completely flat, will the (former) soda water end up more acidic in final equilibrium than ...
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2answers
163 views

What is the essence of chemistry? [closed]

I am an engineering student who loves physics but didn't quite enjoy chemistry. a. When I was in high school chemistry to me was something not as inspiring as physics but in which I couldn't solve ...
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1answer
85 views

Are there safe inks that allow one to eat a fish after painting it?

Just came across a specific type of art called Gyotaku where specific types of ink are used to paint over one side of a fish and then a paper (rice paper, shoji paper, ...) is placed on top in order ...
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1answer
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How to thicken Paint [closed]

I'm non technical and have a question that you can hopefully help me out with as I've been searching online and so far haven't found any answered I'm looking for a product that will thicken the ...
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3answers
72 views

Need reactants for a rocket [closed]

I am doing a project in chemistry at the moment to build a rocket out of materials that can be easily bought and that react strongly to create thrust. I was wondering if anyone knew a good chemical ...
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1answer
29 views

How does lead toxicity from jewelry happen vs. occupational exposure?

It is known that lead levels in jewelry is a problem, especially for children (https://dtsc.ca.gov/toxics-in-products/lead-in-jewelry/). As a parent with jewelry-loving children I am aware that ...
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Can I extract solid sugar from any fruit juice at home?

The goal here is to isolate the sugar from all other compounds in the juice. In this case, I'm using apple juice and grape juice. The sugar does not need to be edible, as it is being used to make r-...
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1answer
175 views

Chemical to dissolve rubber/latex glove

I seem to have a drain pipe in my flat blocked by what seems to be a latex/rubber glove. I am unable to pull it out — is there a chemical that can reliably dissolve the glove and at the same time not ...
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1answer
95 views

How can you extract palladium from palladium chloride

Hey guys I am working on a school project, focused on how precious metals can be recycled from industrial products. I am very much not an expert on the subject of chemistry. But I am just trying to ...
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1answer
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How many electric vehicles can our current supply of lithium power?

This Reddit comment contends There was 870 tons of lithium mined in 2019 in the US. That enough for under 20,000 cars, assuming you're using ~50 kg per car. So that would be 40,000 in 2023, assuming ...
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How does flocculation in paint work?

I recently learned that you can clean up latex paint wash-up water by flocculating it: adding aluminum sulfate and hydrated lime. I vaguely remember how flocculation works in clay slurries (change in ...
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Parallel reactions for one product

For me it is clear how I could solved the kinetic of a parallel reaction like this But, how can I solve if this would be the case: Thanks in advance!
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Is there a word for “damage done by fire” of a material? [closed]

If a house had a wooden frame and was caught in a fire, there'd be nothing much left at the end. The damage would be huge. If a house had an iron frame and was caught in a fire, it probably wouldn't ...

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