Applications of chemistry to reagents and reactions of everyday life.

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Heat Absorption of Liquids

Does same amount of heat absorbed cause the same changes of temperature in the same amount of different liquids? Explain.
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Prevent molten glass from cracking when cooling down

My mother works in a ceramics workshop. Besides giving lessons she creates various ceramic dishes, cups and plates. She often uses the effect of colored glass melting in the product and then leaving ...
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Complete the following reactions and write the spectators for each if any

A.) cobalt (ii) chloride (aq) and cesium phosphate (aq) I am not quite sure if I have the correct answer to this equation, but I have $\ce{ CoCl2(aq) + Cs(PO4)(aq)}$ (for the equation setup) and for ...
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Simple and cheap anti-graffiti layer based non-paint solvent

I have this issue with a group of people intentionally damaging a bench. So far, they would paint curses over the bench with permanent marker. However after I removed the curses with ethanol, they ...
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Regarding preservatives in food

Can sugars like fructose-glucose or high-fructose corn syrup that are found in many types of processed food contribute to shortening a products shelf life? Don't bacteria love things like sugar so if ...
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What is the Natural abundance of Potassium

The three naturally occurring isotopes of potassium are $\ce{^39K}$, 38.963707 u; $\ce{^40K}$, 39.963999 u; and $\ce{^41K}$. The percent natural abundances of $\ce{^39K}$ and $\ce{^41K}$ are 93.2581% ...
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How many grams of NaHCO3(s) will be consumed?

Excess $\ce{NaHCO3_{(s)}}$ is added to 510 mL of $\ce{Cu(NO3)2_{(aq)}}$ 0.240M for the reaction $\ce{Cu(NO3)2_{(aq)} + 2NaHCO3_{(s)} -> CuCO3_{(s)} + 2NaNO3_{(aq)} + H2O_{(l)} + CO2_{(g)}}$
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Is this a Solution Dilution Question? [on hold]

How much glucose, $\ce{C6H12O6}$, in grams, must be dissolved in water to produce 53.0mL of 0.375M $\ce{C6H12O6?}$ If so, how do I set it up?`
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Why is K2CrO4 Potassium chromate?

I was given $\ce{K2CrO4}$ and was asked to name the compound. Can this be done by: 1) Determining the molecular compounds oxidation state or 2) Does one need to memorize the polyatomic ions and ...
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Oxidation State of Oxygen in Na2O2?

I am asked to determine what is the O.S. of Oxygen in $\ce{Na2O2}$ I was under the impression that oxygen had a charge of -2 and I multiplied that charge by 2 giving me an Oxidation # of -4. ...
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Are radioactive isotopes of silver dangerous?

I know we all think of things like uranium as being radioactive in the nasty radiation poisoning sort of way. But do elements like silver have similar effects in their radioactive isotopes? I'm an ...
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Establish the Formula of This Compound

An oxide of chromium used in chrome plating has a formula mass of 100.0 u and contains four atoms per formula unit. Establish the formula of this compound, with a minimum of calculation. Express your ...
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is there any common etchant for ti,cu,304L stainless steel welded joint [closed]

common etchant for ti,cu,304L stainless steel joint
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How does potassium nitrate work as an oxidiser?

Potassium nitrate is very popular compound in pyrotechnics, used as an oxidiser. It can be mixed with sugar to make a "rocket candy", with coal and sulphur to form black powder. You can stick it on ...
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When I dissolve sugar in my cup of tea/coffee, does it become a liquid or gas, or neither?

When I dissolve sugar in my cup of tea/coffee, does the sugar go from being a solid to being a liquid or a gas, or neither? Related: What keeps the sugar suspended in the tea?
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Which Value is Greater?

Indicate which of the following quantities contains the greatest number of atoms and why? a) $6.022 \times 10^{23}$ Nickel atoms b) $25.0$ $\mathrm{gm}$ of Nitrogen c) $52.0$ $\mathrm{gm}$ of ...
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How do you solve a net ionic equation without a balanced equation?

In class, my professor went over a method for finding the net ionic equation without determining the balanced equation (e.g., if finding the balanced equation was too difficult for us students). It ...
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Why is sugar used in low-cost homemade rockets?

I was thinking about making a "rocket candy". It's relatively inexpensive rocket based on sugar and some oxidiser, mostly $\ce{KNO3}$. The fuel is usually formed by heating the mix of both compounds ...
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What is Chevron with Techron fuel?

I've heard the commercials for this stuff for years, but what exactly does it do? Does it do what the commercials say it does (clean out deposits in your tank)? How well? In other words, is this ...
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Which chemical is responsible for making marker ink permanent?

As asked in the question and also, a bonus question: which property of a chemical would make it 'permanent' in terms of markers?
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Does Carbon dioxide smells “cold” [closed]

It may be a strange question. But, whenever I smell my roasted coffee,the air in the alloy smells "colder" than the air in the kitchen. Is it due to $\ce{CO2}$ degassing in the first days after ...
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Using the Law of Constant Composition: Magnesium and Oxygen Mass

What masses of magnesium and oxygen must be combined to make exactly 2.000 g of magnesium oxide? Magnesium's atomic weight is 24.305 and Oxygen's atomic weight is 15.999. Do I simply add the two ...
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How many grams of acetic acid are present in 2.80L of this vinegar?

A vinegar sample is found to have a density of $1.006 \mathrm{\frac{g}{mL}}$ and to contain $8.7\%$ acetic acid by mass. I multiplied $(\frac{1.006~\mathrm{g}}{\mathrm{ml}})\cdot ...
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Why N2O is a “laughing gas”?

It is (mostly) used as an "oxidizer" in motors and engines, I understand that much. The oxygen "oxidizes" with other chemicals, while the nitrogen returns to the air. But $\ce{N2O}$ also produces ...
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Using Conversion Factors

In Europe, gasoline efficiency is measured in km/L. If your car's gas mileage is 35.0mi/gal , how many liters of gasoline would you need to buy to complete a 142-km trip in Europe? Use the following ...
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Grocery store crystalline citric acid

Which type of citric acid crystalline powder do they sell in grocery stores? Is the concentration of citric acid in the crystals 100%?Is it anhydrous or a monohydrate?
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Best Invisible Ink for Clothing

I am interested in writing and revealing a message in invisible ink for theatrical purposes. I found a list of potential compounds here but I am having a hard time prioritizing which to ...
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Is there any replacement for ethyl mercaptan in LPG?

Ethanethiol,commonly known as ethyl mercaptan,is a colorless gas added to LPG inorder to detect its leakage. My question is: Apart from "ethyl mercaptan",is there any gas or liquid, which may be ...
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Would silca have the same effect as activated charcoal?

Silica found in "do-not-eat" packets is a desiccant(I'm not sure about this); and so is activated charcoal. Would consuming it have the same effect if one were to have a stomach ache?
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Is the colour of leaves due to d-d transitions in chlorophyll?

While reading a chapter on transition metals, I came to know that d-Block elements have colour compounds due to d-d transitions. A question came to my mind as to whether there is any d-d kind of ...
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Baking soda bath to deacidify newsprint?

I have some oil-pastel sketches on newsprint I would like to treat for framing (and longevity). My plan is to rinse them in a deacidifying bath, then use wheat paste to wet-mount them to heavyweight ...
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Why does steel wool catch fire when rubbed with a battery?

I was watching an episode of Man vs Wild where steel wool was rubbed with phone battery. To my surprise, the wool caught fire. What is the reason for this?
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When is coal considered to be oxidized?

What amount of oxidization is required to refer to some coal as oxidized coal, and how long does it take for coal to become oxidized in temperatures of roughly 25-40°C? I have found a research ...
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How does lye appear in ashes?

One of the oldest recipes to create lye is this one: Take well burnt ashes and put them in a barrel Fill the rest of the barrel with water Leave the suspension for a week or two You can now try the ...
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About possibly healthy salt substitutes

I noticed Heinz Ketchup has a salt substitute version that uses potassium chloride instead of the usual salt. If this is safe and tastes like salt could it be a better additive than sodium chloride? ...
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Why is mercury used in thermometers?

I know it expands when hot and grows compact when cool (that's about all I know), but I suppose many other substances do, too. Also, and excuses for my ignorance, what the term used to describe the ...
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Black Smoke Produced from Regular Lighter but Not Torch Lighter Applied to Copper

I have a piece of copper mesh from which I would like to remove all coatings/oils. The copper comes from a pot scrubber like this. In order to remove any residue, I held a standard bic lighter up to ...
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223 views

What is the exothermic reaction of superglue with cardboard?

I glued a sheet of paper to a cardboard package using superglue. To my surprise the paper became very warm. What kind of reaction is it? (The glue in question is labelled with Ethyl ...
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Retrieving burnt-off marker from tinfoil using chemistry

I was using a furnace-oven (450 C) to remove organic matter from water filters, and the filters were encased in a tinfoil-pocket. However I labelled the tinfoil with a Sharpie marker, and I didn't ...
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How to use signicant figures?

I am taking Chemistry and am confused about significant figures. In a teaching video, the teacher showed this math: 22.2 22.2 30.10 30.10 +_____ 104.6 This is, of course, the actual answer, but ...
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Why do distilled alcoholic beverages taste different from each other?

I was wondering about vodka vs. whiskey mostly. The way I understand it, a distilled beverage is created by heating a non-distilled beverage, say, beer, and then collecting and cooling the vapors. ...
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How does mixing lemon juice in hooka water affect the composition of the mixture?

The other day I saw one of my friends, who was mixing lemon juice directly into the flavour chimney (or wind guard) and water pot of hooka. When I asked why are you doing as such, he said that it ...
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Bicycle tube inflation with 16g CO2 cartridge

How much pressure will a 16 gram cartridge of $\ce{CO2}$ (carbon dioxide) provide in a bicycle tire? Remembering my high school chemistry (forty years ago) and googling, I came up with this answer: ...
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About all the pop drinks being sold

Regarding chemical synergies I read if someone ingests various product with sodium benzoate (forgive spelling) like the MANY soft drinks that exist ; AND if one has had some quantity of vitamin C ...
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What are these crystals on my champagne cork?

I opened up a bottle of champagne that was left in a wine cooler for approx. 8 years. To my astonishment there were small crystals at the underside of the cork. The crystals are colorless, odorless ...
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Why is the recipe of Coca Cola still a secret?

Why is the recipe for Coca-Cola still a secret? I think that given the current state of technology, it should be proficient enough to find any of the secret ingredients in Coca Cola. Any thoughts? ...
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How dangerous is taking a bath in Coca Cola?

What can be the effects for the body to be immersed in Coca Cola for a while? A friend commented me that the coke is quite acidic (pH 2.5 if I recall properly), and we were guessing what could be the ...
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Aerobic respiration to produce water [closed]

Could the aerobic respiration reaction occur outside the body to produce water? If it is possible how would it occur
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Psychoactive ingredients in this soap?

Could any ingredients from this product be psychoactive in some people, if the are sensitive to them? https://www.lush.co.uk/products/honey-i-washed-kids I have found the product to be relaxing as ...
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What is the liquid used in instant shoe shiner?

What is the liquid used in instant shoe shiner products? Ive tried refilling it with WD-40 but I would like to know if there are any cheap alternatives to refill it?