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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24
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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 ...
3
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1answer
595 views

What could be causing my bath salts containing baking soda to explode out of their containers?

I run a small herbal wellness business and one of the products i sell are bath salts containing baking soda. The base ingredients are Epsom salts, Dead Sea salts, magnesium chloride, baking soda, ...
2
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1answer
120 views

Aluminium in homemade liquid castile soap? [closed]

I made some liquid castile soap in a slow cooker. There was a slight scratch in the non-stick surface of the container. I read that potassium hydroxide when coming into contact with aluminium ...
-1
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1answer
134 views

Can someone explain this question in detail? [closed]

An infusion stated to contain 0.95% w/v NaCl was diluted so that its Na content could be determined by flame photometry. The following dilutions were carried out: 10 ml of the sample was diluted to ...
1
vote
1answer
875 views

Is alcohol based sanitizer flammable? [closed]

After applying sanitizers can they catch fire, if yes, then after what time is it safe to use the hands, say in the kitchen. Also one more question is that if they are flammable then the flammable ...
2
votes
1answer
86 views

Home made PCB tinning solution [closed]

By reviewing a couple of articles and videos I decided to give some try to develop a PCB tinning solution at home. Based on most of the articles, the easiest way to develop this solution is by using ...
0
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1answer
55 views

Can submicron mould particles go through building structures, non permeable foil paper? [closed]

I read that submicron mould particles and vapours related to mould can go through walls, floors and ceilings? Is this correct?
1
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0answers
68 views

Safe reaction to maintain 30psi (2 bar) of gas, while that gas is released at random?

I'm going to use it to power a Lego Pneumatic Engine (LPE) (random example, not mine), that will be self-contained, and start and stop a lot using a throttle valve. So the requirements are: Use ...
2
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0answers
3k views

Isopropyl Alcohol Vs Acetone for Dissolving Organic Contaminants on PCB

Acetone is widely used in the labs as a solvent to clean the vials and tubes as it is good solvent for organic materials. While Isopropyl alcohol is used as a rubbing alcohol for cleaning contaminants ...
2
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1answer
102 views

Baking Soda and Vinegar: Are there any secondary reactions?

I want to run a Lego Pneumatic Engine on the CO2 that is produced, but before I do, I want to be sure that that's the ONLY gaseous product from a real-world reaction. Everyone seems to assume that it ...
-2
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2answers
347 views

What is the difference between enthalpy change and energy change? [closed]

This question seems really dumb but I rather be safe than sorry. I read about enthalpy change in my chemistry textbook which defines enthalpy change as the energy exchange between a chemical reaction ...
0
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0answers
37 views

Lowering the freezing point of a lipid by adding another lipid

I'm trying to stop bacon grease from congealing in the fridge by adding another lipid with a lower freeze point to it, but I'm not sure how much to add, as I'd like to keep the ratio as bacon-grease ...
7
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3answers
1k views

Does motor oil get more viscous when heated & what is the meaning of the SAE motor oil code?

The motor oil in my 2004 Pontiac Vibe is 5W-30. My (incorrect) understanding of this SAE nomenclature is that 5W means "Viscosity index of 5 in the winter" (or when really cold - like $\pu{-30 ^\...
-4
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1answer
36 views

What would weigh more? A ice cube or water, if the ice cube is from the same amount of water [closed]

So if I frozen 50 ML of water, it turns into ice cube. Would the ice cube weigh the same as the 50 ML of water it was before?
-3
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2answers
229 views

Is C4O5 possible?

I have searched all over the internet and I have found no specific answer. I just want to know if C4O5 is possible and what would it be called.
2
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1answer
92 views

Why And How are Unbranched chains of hydrocarbons easily biodegraded?

My chemistry textbook says If detergents are highly branched then they can't be easily degraded by bacteria.So,nowadays the branching of hydrocarbon chain is controlled and kept to a minimum. Upon ...
3
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1answer
533 views

What ratio of 73% calcium hypochlorite powder to water mimics the strength of sodium hypochlorite (bleach)? [closed]

Calcium hypochlorite is sold as pool shock in varying strengths. I've read that it can be dissolved in water to create a 'bleach' (typically sodium hydrochloric or sodium hydroxide) and is often used ...
2
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2answers
465 views

Why is HCl the acid of choice for swimming pools?

Why is muriatic acid the go to acid to put into pools? Does it work better than nitric acid, sulfuric acid, or another strong acid? I mean they all will add the same amount of H+ right? Note, we use ...
-1
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2answers
107 views

What are chemical bonds made of, and how do they form? [duplicate]

All atoms are linked together by chemical bonds, but what are the bonds themselves made of? I'm sorry that's a stupid question, but I'm only 14, and haven't entered high school yet, and my science ...
4
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0answers
131 views

Is there an adhesive that is not dissolved by acetone?

I am trying to glue glass sheets together to make a sealed 13" x 13" x 13" box. Inside this box there would be acetone gas used to melt 3D printed parts to make them more durable. Acetone will remove ...
8
votes
2answers
790 views

How is octane rating defined for negative values and those over 100?

Based on my reading, the octane rating for a given fuel is calculated by finding the compression ratio at which it knocks and finding a mixture of $X\%$ isooctane and $(100 - X)\%$ n-heptane which ...
-4
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1answer
172 views

if we mix bleaching powder in water will this be converted to Sodium Hypochlorite? [closed]

if we mix bleaching powder in water will this be converted to Sodium Hypochlorite ?
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1answer
2k views

Is bleaching powder same as Sodium Hypochlorite? [closed]

i want to know is Sodium Hypochlorite is same as bleaching powder. can some one please let me know.
0
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1answer
33 views

If the gaseous molecules didn't have any kinetic energy would the surface of a filled balloon still be firm? [closed]

The most of the ideal gas law equation is based on the fact that the gaseous molecules are moving around and cause collisions and thus have some pressure. If these molecules were to not have any ...
0
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0answers
22 views

Calculate amount of enzyme needed for in vitro phosphorylation?

I have 100 micrograms of STAT1 and its molecular weight is 90 kDa. I calculated the number of moles to be 1 nmoles. The specific activity of JAK1 (the kinase) is 110 nmoles of phosphate per minute per ...
2
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1answer
60 views

How to modify viscosity of ZnO ink?

I have stumbled upon these instructions on how to create $\ce{ZnO}$ nanoparticles. I am interested in making a DIY ink, for use with a parallel metal plate pen and a piezo-actuated microdrop nozzle. ...
-1
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1answer
88 views
0
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1answer
209 views

The effects of acetic acid on porous concrete brick and mortar joints for someone who has no understanding of chemistry

I mistakenly applied a patio cleaner containing acetic acid to my porous concrete facing brick thinking it was biocide. The concentrate solution has a ph of 3 and I diluted it to one part concentrate ...
0
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1answer
41 views

How do CO2 Fire extinguishers procure their CO2 [closed]

How do CO2 Fire extinguisher manufacturers get such a large amount of Carbon Dioxide? Do they get it through a chemical reaction or burning hydrocarbons?
0
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1answer
1k views

Use household ammonia damage aluminum?

I'm sorry if this has already been asked but I could not find it on a search here though I also could not determine how to search for the presence of two words ('ammonia' and 'aluminum') I've read ...
-4
votes
1answer
136 views

How much energy do you need to heat and melt a sample of ice from -5°C to 50°C? [closed]

A 67.8 g sample of ice initially at -5.00 oC is heated until the final temperature is 50.0 oC. Calculate the amount of energy gained by the sample. ANSWER IN kJ for sig figs. The specific heat ...
4
votes
1answer
162 views

Isotopic profiling [closed]

If a molecule contains 12 carbon atoms and 2 nitrogens, what's the probability that it contains precisely 1 carbon-13 and precisely 1 nitrogen-15? my working: 1.1(12)(0.36)(2) = 9.5 % where 1.1 is ...
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0answers
30 views

Science of soap bubbles

On the web there are tons of different recipes for a solution to make soap bubbles. Most of them use only three ingredients: water dish soap glycerin But their ratios widely change among the sources....
2
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2answers
946 views

How many hydrogen bonds can methanol make?

I believe that it can form 2 hydrogen bonds, one with oxygen and the other with hydrogen but a classmate said that oxygen can form 2 hydrogen bonds? Is this true? I can't find anything on google to ...
-2
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1answer
74 views

Why is it that when I add yolk to vinegar and olive oil, it doesn't create a stratification?

Why is it that when I add yolk (which mostly consists of minerals, vitamins, lipids and proteins) to vinegar and olive oil, it doesn't create a stratification? I'm really confused about this because ...
0
votes
1answer
46 views

When reactants are in their transition state, can they go back into their reactants form instead of progressing to form the products? [closed]

When reactants are in their transition state, can they go back into their reactants form instead of progressing to form the products? I don't see any reason why the reaction has to keep progressing ...
0
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2answers
6k views

What is the net ionic equation for the reaction between Ba(OH)2 and H2SO4? [closed]

I know its either: 1.) Ba + SO4 = BaSO4 2.) Ba + 2OH + 2H + SO4 = BaSO4 + 2H2O But can someone explain why water is or isn't part of the net ionic?
2
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1answer
216 views

Significance of shapes of Conical flask and Kjeldahl flask

What is the practical significance of the shapes of conical flask and Kjeldahl flask?
2
votes
2answers
689 views

Does aluminium foil have an odour/gas off?

I have used some aluminium foil to cover some windows and I notice a light smell in my small flat. I could be mistaken and it could something as I've been moving things around but this leads me to ...
-1
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2answers
56 views

Addition of acid and base to buffer system [closed]

So I was doing my chemistry assignment and became stuck. Can I get some help? a) Calculate the pH of a buffer system that contains 0.40 M of NH3(aq) and 0.50 M of NH4Cl(aq) . Note that the Kb value ...
2
votes
2answers
5k views

is bleach residue (after evaporation) safe? [closed]

I have been preparing bleach disinfectant lately in a spray bottle and has been spraying on my couch, door mat, door knots, etc... I don't rinse it... So I assume there is bleach residue left after ...
-1
votes
1answer
236 views

Does hot water make more foam? [duplicate]

A message has been floating around saying that it is better to wash your hands with warm water, as it helps the soap create more foam. Is it true? If it is true, why is it so? Is there a temperature ...
-2
votes
1answer
112 views

looking for alternatives to lysol wipes (Alkyl C12-18 dimethyl benzyl ammonium chloride) [closed]

Lysol and other recommended disinfectants claiming virucidal properties have been basically impossible to find here for weeks. I did however, find a bottle of clorox all-purpose disinfecting cleaner ...
-1
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1answer
39 views

How much damage is done to ascorbic acid vitamin C content by sunlight and fluorescent light? [closed]

I left a large clear bag of ascorbic acid exposed to fluorescent light and sunlight for 48 hours. The sunlight was direct for several hours in the afternoon. How much has the effectiveness of ...
-2
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2answers
3k views

222nm HARMLESS UV lamp for protecting from virus covid-19 [closed]

I did asked before , but apparently providing a link to a science report of harmless for humans (both skin and eyes) far-UV light was not enough to make people understand the significance of the ...
-4
votes
1answer
66 views

Disinfectant production [closed]

One of my friends says that he made a disinfectant. These are the materials: 83% methanol isopropyl alcohol propylene glycol and the others are: citral, geraniol, linalool, dlimonene, l alpha ...
8
votes
0answers
275 views

DIY hand sanitiser solution forms spongy substance

I am trying to make my own hand sanitiser since it’s sold out everywhere. The formula I use is 1 part aloe vera gel in 2 parts 100% isopropyl alcohol. The problem is when mixing the two, the solution ...
0
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0answers
904 views

Possbile to test percent of Ethyl Alcohol in hand sanitizer?

The percent of Ethyl Alcohol in hand sanitizers slowly drops over time. And manufacturers put an expiration date on the bottles. But I'd to test the percent of Ethyl Alcohol for myself for a new ...
-2
votes
2answers
44 views

How do I convert purity percentage to grams? [closed]

I'm trying to find out how many grams of a substance, in this case propylene glycol, are in a 5 litre container that is advertised as being 99.8% pure. Any help would be greatly appreciated.
0
votes
1answer
72 views

How does one determine whether a chemical requires hazardous waste disposal?

It is pretty easy to find information about the actual hazards of a chemical in the SDS, but I have been struggling to sort out which classifications require that the compound be handled differently, ...

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