# All Questions

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### Link between number of carbon atoms in compound and delta h when combusted

What is the link between the number of carbon atoms/ types of carbon bond in a fatty acid and the amount of energy it releases when combusted as a biofuel.
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### Errors while collecting gases over water. (Pneumatic Trough)

What are some possible errors while collecting the volume of a gas through displacement of water in a pneumatic trough? Assume gas is oxygen, for context
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### what will be the state of co2

When CO2 is transferred from CO2 cylinder to reactor tank till the pressure reaches 400 bar with temperature at 60*C.What will be the state of CO2 in reactor tank either liquid or gas ?
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### Characteristic properties of (i) metallic conductivity and (ii) semiconduction in solids

I need a brief account of Characteristic properties of (i) metallic conductivity and (ii) semiconduction in solids
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### In Diazonium Ion why does N contain 4 bonds?

Nitrogen's valenc number is 3. Sometimes it can form a co-ordinate bond by donating it's lone pair electrons. In diazonium ion N has 4 bonds, then one of those 4 bonds must be a co-ordinate bond. ...
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### Why is NO2 stable?

In class, my chemistry teacher told me that NO(g) produced will react with O2 in the air to form NO2 since there is a single electron in the molecule, but I found there still has a single electron in ...
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### Redox Reactions in Galvanic Cells

What are the anode, and cathode equations for a redox reaction including lithium manganese oxide? I'm completting an assignment regarding lithium button cells and am having trouble finding a correct ...
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### Determining absorption spectrum, magnitude of Δo and spin for Iron Oxalate

Iron Oxalate ions form an emerald green solution when dissolved. If the ions in solution appears emerald green to our eyes, what color of visible light is it mostly absorbing? What does that tell you ...
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### Spectroscopy of 1-bromo-3-methylbutane

using the MS spectrum, can you please help identify the possible fragments of 1-bromo-3-methylbutane. Also how to identify it using the IR spectrum.
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### What does “off-hue” constitute in the context of analyzing a sample using the Pt-Co color scale?

ASTM D1209, the method describing how to perform the Pt-Co color scale test for a sample, recommends reporting material that can't be matched to a particular standard as "off-hue". For color based ...
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### Cast Iron Vinegar evaporation [on hold]

I soaked my rusty cast iron pans in a solution of vinegar and water. The solution evaporated and left a hard crusty layer on my cast iron pans. What is it, why did it form (besides the fact that got ...
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### Nickel-63 and surge protector / voltage regulator

I've read that nickel-63 is used in surge protectors and voltage regulators. What is it about nickel-63 that makes it particularly suitable for those applications?
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### Conversion of oxalic acid to malonic acid

The reagents I have used here are $\ce{LiAlH_4}$ which reduces the carboxylic groups into alcohol.Used $\ce{HIO_4}$ which breaks up the molecule into methanal. Then I applied Grignard reagent which ...
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### Reaction of 1,3 Butadiene with HBr in the presence of peroxides

I have learnt that the reaction of 1,3 Butadiene with HBr depends on the temperature as the temperature determines whether the reaction is under kinectic control or thermodynamic control. I believe ...
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### What would be the best filtering technique to filter Leachate? [on hold]

I am a student and as part of a project of mine I need to find a way to filter leachate. Would reverse osmosis and nanofiltration be the best option or are there more effective alternatives? ...
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### Is bentonite self-healing?

I want to make a shallow pond (3 - 4 ft. max depth) lined with bentonite for both my ducks and willow tree. However, the willow's roots need to be able to penetrate the pond liner and thus the liner ...
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### THz Spectroscopy of proteins [on hold]

I want to study aqueous solutions of proteins using THz spectroscopy to gain insights about the different vibrational modes and the solvation dynamics. Can someone suggest some interesting proteins to ...
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### What is the simplified chemical equation for this reaction? (Explaining to daughter)

Slime recipes seem to be a craze at the moment. My eight-year-old daughter is swapping recipes with friends and looking up recipes online. This is fantastic because it is home chemistry and an entry-...
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### Sn1/Sn2 reaction [on hold]

Could anyone tell me why this reaction is Sn1 and not Sn2? Ps; there is a small mistake with the phenyl (the OH should not be there)
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### How does Benzoyl Peroxide bleach coloured chemicals such as Lycopene? (As compared to Sodium Hypochlorite, conventional bleach)

I know that conventional bleach, Sodium Hypochlorite (NaClO)bleaches coloured chemicals like lycopene by breaking the conjugated pi bonds in lycopene. The O-Cl bonds in bleach causes the Cl to be ...
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### The reference point used in Manometer equations [on hold]

Could someone clarify for me why h is determined from the lower liquid level to the higher lower level instead of say the bottom center of the bend?
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### Stability of keto-enol vs. conjugation

I am trying to figure out which tautomer of creatinine: is more stable. We see that the enol tautomer is more highly conjugated: the pi electrons from the alcohol to the double bond to the pi ...
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### What is a formal charge, conceptually? [duplicate]

I'm having some difficulty understanding what a formal charge is. I know how to calculate it and what it's used to determine, but I don't know what the numbers represent. For example, in methane, the ...
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### What substances are hypergolic with liquid O2?

If something flammable is surrounded just by oxygen, I should see flame, right? The object would be even surrounded by more molecules than in the case of gas oxygen. On the youtube I see that people ...
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### What is the product of given reaction [on hold]

I have the solution In it shows a carbocation on the right ring But isn't it unstable as it is near the carbonyl group(I effect destabilising the carbication before ring expansion)
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### Stereochemistry of cyclic alkane [on hold]

Why are the following compounds diastereomers ?
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### 1 bucket water purification technique [on hold]

I am from Kerala India. We are flooded here. Public water supply is stopped and facing scarcity in drinking water. I remember, in my childhood, after our play, we used to drink water from a well.That ...