Applications of chemistry to reagents and reactions of everyday life.

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Separate precious metals from catalytic converter

I am looking to separate the small quantities of platinum and palladium in a catalytic converter. However since these are very inert metals I am unsure how to proceed about doing so. Melting the ...
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0answers
23 views

Changes in the physical states of matter [on hold]

A change in the physical state of any matter can be caused by either of the following: a)By changing temperature b)By changing pressure c)by changing both temperature and pressure ...
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1answer
40 views

Kinetic Molecular Theory, Ideal Gas, and Relationship Between Pressure, Temp., and Volume [on hold]

Using the Kinetic Molecular Theory, describe an ideal gas and the relationship between pressure, temperature and volume. Explain why there are no truly ideal gases in nature.
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1answer
27 views

Tap water leaving white residue after drying

There is no heating or cooling in this process. We recently move to a new house and something strange is happening with the water in every tap of the house. First thing I noticed is when you fill a ...
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0answers
32 views

Will fire corrode stainless steel?

Thinking of making a stove out of stainless steel. Stainless because it will have a double outer jacket to pass water through and heat it. Will a wood fire sitting directly on stainless steel corrode ...
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18 views

Dioxine in lignified materials?

I read that hemp is bacteria resistant. And also that lignified materials, like hemp, can release dioxin when fungi attack the material. How is that possible when hemp is bacteria resistant?
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1answer
70 views

What would happen if someone consumed a Silica Gel Packet? [on hold]

Most packaged goods have the tiny Silica Gel Packets packed along with a clear warning on every single packet. My question is, What exactly would happen if someone actually consumed the contents?
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1answer
92 views

Jahn-Teller Metal : The new state of matter

Recently it came in the news that scientists have discovered a new state of matter called Jahn-Teller metal. I tried reading up on it but couldn't understand it clearly. Please explain in simple ...
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1answer
60 views

Why do some gases liquefy easily under pressure and normal room temperature?

Is this a combination of Boyle's and Charles' Laws or simply one of them? I'm confused as to which applies. I don't feel I fully understand the implications of both laws individually and I'm ...
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3answers
76 views

Liquid-Liquid phase separation

Consider a container that contains a mixture of many liquids. Can two of these liquids phase separate without having any significant effect on other liquids inside the container? Is there a feasible ...
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0answers
20 views

What solvents can get rid of oil stains?

What kind of solvent would you use to remove an oil based stain? I need help for a chemistry lab report and I tried to look it up but nothing seems to be helping me
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5answers
2k views

May I treat units (e.g. joules, grams, etc.) in equations as variables?

Suppose I have two units, Tonks, $T$, and Borks, $B$, as well as the equation $\frac{50T}{20B}=x$. May I manipulate the equation as though $T$ and $B$ were the kinds of symbols that we learned to ...
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0answers
31 views

change in state (sublimation and deposition)

I am slightly confused as to how Ii should think of changes in state (especially sublimation and deposition). Should I think of sublimation and deposition as skipping the liquid phase (fig 1) or ...
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1answer
65 views

Reactivate dried up ink of ballpoint pens

According to this question, ballpoint pens start writing intermittently when the ink is drying up. In other words, the ink is becoming more viscous and does not flow any more. Are there ways to make ...
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1answer
31 views

What is the value for the reverse reaction?

My question deals with the reaction $\ce{2NO(g) + O2(g) -> 2NO2(g)}$ with $K_c = 1752$. This is what I have so far; $K_c$= products over reactants, so is the reverse reaction reactants over ...
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0answers
9 views

What is the difference between moisture regain and water holding capacity?

Water retention is how much water the fibre can retain. Water holding is function of hydrophilicity and construction of the fibre (fabric). What is the difference between those two? Because to retain ...
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1answer
37 views

Specific gravity of H2O2 bleached viscose

What is the specific gravity of $\ce{H2O2}$ bleached viscose? In literature, I can find that this is $1.52~\mathrm{g~cm^{-3}}$, but for bleached viscose is it not findable. Can I presume $\ce{H2O2}$ ...
7
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3answers
956 views

Does salt vaporise?

Does salt vaporise? If I boil a salty water and leave it there until half of the water vaporises, will it be twice as salty as in the beginning? Or exactly the same? Or somewhere in between?
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0answers
24 views

Dissociation Energy for CO2 per molecule

I'm trying to calculate the energy required to dissociate a single $\ce{CO_{2}}$ molecule into its respective elements, and I'm given that it takes $ 373.6 \times 10^{3} \, \, \frac{joules}{gram} $ ...
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3answers
3k views

Drinking 18 M-ohm water

What would be the effect if someone were to drink ultra-pure, 18 M-ohm water? Would they immediately die? Would they just need to pee more? Would $\ce{CO_2}$ from the air (after the bottle is ...
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1answer
54 views

What reactions create a lot of gas really quickly?

I'm looking for a chemical reaction that produces a large amount of a gas in a very short amount of time (like less than a second). What are my options?
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1answer
64 views

Smoke alarm ion neutralisation

Smoke alarms are a necessary part of many modern day buildings, especially in laboratories and of course, the family home. According to the World Nuclear Association page Smoke Detectors and ...
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2answers
69 views

Is there a very stinky chemical solution that isn't a health hazard?

An effective way to disperse rioters & looters would be to send an armored vehicle in to spray them with a very stinky liquid. Is there a chemical that stinks but is not a health risk and that ...
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1answer
62 views

Does the Battery Bounce Test actually work?

I heard that a good way to test if a battery is dead or alive is to see if it bounces. Supposedly, dead batteries bounce higher than living ones. Can someone tell me if this is a legitimate claim, and ...
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1answer
54 views

Do all double displacement reactions have precipitates?

I know that most of the double displacement reactions form some kind of precipitates in their products. But do all of the double displacement reactions form precipitates? I have searched on this site ...
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0answers
31 views

Spring turnover in a lake

During spring, the water at the top is at 0 degrees, and that the bottom is at 4 degrees (with a small middle part in between with intermediate temperatures). In spring as water warms at the top, its ...
4
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1answer
32 views

Dissolving to Create a Solution with Ethanol

If at 95% Ethanol can dissolve chemical X at 1mg/1mL then theoretically if you have 500mg of chemical X you can dissolve it in 500mL of $\ce{EtOH}$ to get 1mg/mL correct? My question is, if you have ...
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6answers
1k views

Why is the melting of ice a spontaneous reaction?

So here's my question: we know that melting of ice is an spontaneous reaction but is it spontaneous? We have to supply energy in the form heat for the reaction to take place.
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1answer
71 views

What is dust made of?

I was cleaning my blinds today, and I wanted to know what are the primary components of dust are. I know that it is made of microorganisms and other particles, but I do not want to guess that it will ...
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0answers
20 views

First-Order Kinetics and Half-Lives

A reaction displays first-order kinetics and 0.0060% of the amide-linked reactant was found to have been hydrolyzed after 28 days. a) What is the rate constant in units of $yr^{-1}$ ? $ln ...
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2answers
66 views

How to determine the acidity or basicity of dissolved salts?

One kg of each substance below is dissolved in a bathtub full of water. Will it be acidic, basic, or neutral? $\ce{KNO2}$ $\ce{HF}$ $\ce{(CH3)3NHBr}$ $\ce{HO-CH2-CH2-O-CH2-Cl}$ ...
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2answers
212 views

pH of dilute HCl solution

What is the pH of a solution of $3.4 \times 10^{-10}$ moles of HCl in a volume of $150.7L$? This is dilute so I expect pH to be high. $\frac{3.4 \times 10^{-10} mol}{150.7L} = 2.26 \times 10^{-12} ...
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1answer
25 views

pH of a weak base calculation

Calculate the $pH$ of a $100$ $mL$ solution containing $0$$.0375$ moles of the weak base, Sodium Benzoate, $\ce{C6H5COONa}$. $$\ce{C6H5COO + H2O -> C6H6COO- + OH-}$$ $$\frac{0.0375 ...
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1answer
34 views

Why does opened wine develop the sour taste and smell of vinegar?

An opened bottle of wine developed into a sour taste and smell of vinegar. Why?
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1answer
204 views

When I place a straw in carbontated drink and blow, more gas bubbles rise to the surface?

When I place a straw in carbontated drink and blow (making bubbling noises), more gas bubbles rise to the surface. The gas bubbles which rise to the surface are from the carbon gas dissolved in the ...
4
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1answer
46 views

Can organomercury compounds synthesize accidentally from household cleaning products? [duplicate]

I had broken a CFL partially on carpet last week. It was a spent bulb, and the outer glass shell broke but not the fluorescent tube - apparently the tube did have a small hole in it which found out ...
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1answer
45 views

Water in the ultrasonication bath

Why something jelly forms in the water if it is kept in in a ultrasonication bath for long periods? When water is exposed to ultrasonication for say a month, some jelly substances form in the ...
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1answer
38 views

Can acid mine drainage form acid rain?

Can acid mine drainage form acid rain? Since normal acid rain is formed via combustion of fossil fuels, the sulphur dioxide and nitrogen dioxide are all in the gas phase, whereas in acid mines the ...
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2answers
406 views

Can dimethylmercury originate from cleaning up a broken thermometer with disposable wet wipes?

I broke a CFL in my home (so elemental mercury is present in a small amount) and wiped up some of the mess with a clorox wipe. The wipe in question contains dimethyl benzyl ammonium chloride and ...
3
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1answer
25 views

What non-poisonous chemicals can get rid of SLS effectively?

Whenever I brush teeth, there are some kind of bubbles sticking inside the cavity and that's uncomfortable, it should be SLS as found on the internet. Does anyone know how do I get rid of those ...
4
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1answer
156 views

Peroxide bleaching for bast fibres?

Is peroxide bleaching ($\ce{H2O2}$) suitable for treating bast fibres? I read that to be successful, it needs to be combined with chlorine bleaching. Because of the end usage, I don't want to use this ...
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1answer
52 views

How to calculate the required concentration for sodium sulfite to remove oxygen as an oxygen scavenger from a solution?

If I know the amount of oxygen in such a solution, how can I know the required concentration of sodium sulfite to be used and react as oxygen scavenger?
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3answers
484 views

How can I easily explain to a layperson the difference between types of “contains”

I had a conversation with somebody who had somewhat confused ideas about food. He thought that "all food contains sugar" and when I gave a bottle of oil as the counterexample, he said the glycerol is ...
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1answer
40 views

Effecting Chemical Change

Apologies in advance as I am not a science person by any definition. By most, I'm probably not a person but we'll let that be. I am studying the notion of "change" in things and focusing on chemical ...
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1answer
23 views

Accelerated Oxidation Of Iron When Coating Breaks

I was presented with the following information: If iron is painted, then oxygen and water are prevented from contacting the metal, and corrosion is avoided. Sometimes the iron is coated with a thin ...
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0answers
11 views

Should residual filtered water be removed from a pitcher before new water is added?

Should the remaining filtered water in a filtered pitcher be removed before adding new water to the filtering water system in the pitcher?
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0answers
20 views

Why does the black powder that comes off aluminum pans behave the way it does?

When I wet an aluminum pot or cookie sheet and then dry it with a towel, it creates dark gray marks on the towel. This happens more if the aluminum is a little rough. It seems that there's a fine ...
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1answer
46 views

Mixing solvents, or how does paint thinner work?

I would like to understand how a mixture of solvents works together. For example, there are two solvents combined, and each one allone can dissolve some material, but one acts faster. How do they ...
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1answer
56 views

Is triclosan harmful?

I keep hearing about this product known as triclosan, and that it is used in sanitizing soap. And I also heard that it is harmful, and causes some sort of muscle problems. However some people aren't ...
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1answer
63 views

Finding pH of a buffer

What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M methylamine, $\ce{CH3NH2}$, with 25.00 mL of 0.10 M methylammonium chloride, $\ce{CH3NH3Cl}$? Assume that the volume of the solutions ...