Applications of chemistry to reagents and reactions of everyday life.

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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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60 views

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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165 views

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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36 views

Does Carbon dioxide smells “cold” [on hold]

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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How do I go about finding the ratio of Ag to CO3? [on hold]

How do I go about finding the ratio of Ag to CO3 and also the empirical formula?
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27 views

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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34 views

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 to Determine Exchange Rate [closed]

While in Europe, if you drive 125km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 39.0mi/gal ? Assume that 1 euro = 1.26 ...
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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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Specific gravity question? [closed]

A beaker contains 10 in^3 of pure glycerin. If 2 in^3 of water is added to the glycerine, what is specific gravity of the mixture? Ans: 1.22 Please show steps.
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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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32 views

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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34 views

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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53 views

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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61 views

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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32 views

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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1answer
37 views

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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2answers
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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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211 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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142 views

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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64 views

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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299 views

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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43 views

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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1answer
31 views

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?
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Cows Milk Protein In Lactose

Does anyone know if the Casein/Whey Cows Milk Protein can be found within processed lactose ? Some background to this is our 4 month old baby was given teething granules. She was then presented with ...
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Why no thermal expansion for camping tents?

I know that solid materials expand when heated, which is called thermal expansion. But what is happening to tent square or tent canvas of (plastic?) camping tents? I have noticed, that during the ...
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Ethyl alcohols use on polycarbonate and acrylics

I have an interesting question about the use of ethyl alcohol on polycarbonate windshields. I have had friends asking me about the use of Pledge Multi-Surface cleaner on their windshields. Some ...
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50 views

Calculation of mass from mmol/L

Sorry I understand this looks like a "homework question", (I'm actually a 46yr old dentist looking to see what amount of calcium phosphate should be effective in a proprietary toothpaste!). However, ...
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579 views

Does ice melt faster when submerged in water?

Suppose you have a container with a drain at the bottom full of frozen H2O which you leave a room temperature to melt. Will the ice melt faster if you drain the water as it melts? I would expect that ...
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Are homemade batteries a practical alternative during a blackout?

If your home lost power without warning; are homemade batteries (such as the lemon/potato variety described in this question Are homemade batteries economically practical?) a practical alternative for ...
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351 views

Are homemade batteries economically practical?

Every kid who has been to a science fair knows that you can make a battery with a lemon, a potato, a penny and a nail. I've never done this and I'm not entirely clear on how it works beyond a hazy ...
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Which azo compounds are found in DVD-R and CD-R media?

Does anyone know which specific azo compounds are used in DVD-R/CD-R recordable media?
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Chemistry of Walter Mitty's negative developer/stop bath/fixer?

I asked a question here How can Walter Mitty examine the negatives of photos in the bright sunny day? Commonly known, there are three steps using chemical baths to bring out the images of negatives: ...
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can sodium persulfate etch or damage a titanium heater?

I use Sodium Persulfate to etch copper on a PCB process. I have been using glass heater on the etching tank but the glass is too fragile; it breaks too easily. I read that titanium heater is used ...
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38 views

Are there any hazardous products that would come from mixing glass cleaner with lubricant?

Are there any known safety issues if you mix: Mr.Muscle glass cleaner GT85 spray lubricant
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What is the chemistry of this household cleaning recipe?

What would be the product if baking soda and common salt and vinegar are added together?
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Are salt substitutes good alternatives to sodium chloride?

I bought a low salt Ketchup from Heinz and it says it uses 'ALSOSALT' substitute ( potassium chloride). It says it does have 5mg. of sodium. Is potassium chloride (with possible additives) a good ...