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Romix
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Solvent for glue
Please recomend solvent, that will easily dissolve glue.
I tried 2-propanol, cold and boiling hot. Not dissolving it.
Glue that hold rubber to pcb.
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j_sum1
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The pool is an inflatable with no pump or filter. I give it a few pool chemicals to make the water last a bit longer for the kids.
Yes I checked it with both pH paper and phenol red. The meter is reading high.
The meter has never gotten dry. It is kept in a buffered solution which, as far as I can tell is unchanged - close to neutral.
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Detonationology
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What kind of glue? Maybe try acetone.
“There are no differences but differences of degree between different degrees of difference and no difference.” ― William James
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NedsHead
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My PH meter recommends using only a storage solution and it came with a small bottle, after the small bottle of solution ran out I have been storing
it in tap water without any issues, storing them in distilled water will ruin them, I'm not sure about 6.86 buffer though
[Edited on 20-2-2016 by NedsHead]
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Great
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Quote: Originally posted by symboom  | ive mixed the two in a process to extract potassium chlorate from matches and part of it is to add ammonium hydroxide to the mix. Not sure if it is a
reaction or so it seems is it reacting if so what is formed or
[Edited on 13-2-2016 by symboom] |
I think a soluble hypophosphite is formed
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Texium
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Threads Merged
19-2-2016 at 21:49 |
Kagutsuchi
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Can I do that with gray tin, too? So the covalent allotrope. Because that is what I have.
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DraconicAcid
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Should work with either.
That reminds me- I was going to put a bit of tin in the freezer, to see if it changed.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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arkoma
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WTF is a zeotrope?
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
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j_sum1
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azeotrope?
https://en.wikipedia.org/wiki/Azeotrope
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arkoma
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nope ZEOTROPE. I'm wondering if I can fract distill the water off of 5% AcOH. I've read the wiki on zeotropes but it is ambiguous to my somewhat
fractured brain.
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
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NedsHead
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closest thing I could find was Zeotropic Mixture? https://en.wikipedia.org/wiki/Zeotropic_mixture
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UC235
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Yes, acetic acid and water are a zeotropic mixture. That is, they do not form an azeotrope and can be separated by distillation. Note that this
fractionation is considered exceptionally difficult due to the close boiling points. A packed column with a significant number of theoretical plates
and a high reflux ratio will be needed.
Using a smaller column like a vigreux or even a slow simple distillation, you will be able to concentrate the acetic acid but it will not be anhydrous
or near it, especially for the latter option.
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DraconicAcid
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In words derived from Greek, a- or an- means "not" or "without". So atheist is the opposite of theist, anisotropic is the opposite of isotropic,
agnostic is the opposite of gnostic, and an anaphrodisiac is the opposite of an aphrodisiac.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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arkoma
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Thanx UC. Have a vigreux and since I need to keep my mind off the possible tornadoes later today may give it a whirl.
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
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James Ikanov
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Would it be hasty to describe pH (in terms of acidity or how basic something is) as an electrical imbalance?
Or is that rather incorrect?
A tad abstract, but I always end up just seeing reactions as a transfer of energy (electrical or otherwise, and usually electrical) from one atom to
another in the form of electrons, and most definitions seem to try to just describe it as a change in hydrogen protons? Is there a practical
difference between such an exchange and an electrical charge, in the technical sense of things?
“To do good work one must eat well, be well housed, have one's fling from time to time, smoke one's pipe, and drink one's coffee in peace” -
Vincent Van Gogh
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NedsHead
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Unintended pun?
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j_sum1
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Anyone ever use one of these geiger counters that plug into a phone?
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Sulaiman
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A colleage here at work who is into radioactivity who I just asked,
recognised it immediately and said that these are just large area photodiodes with a low gate leakage fet amplifier.
Sounds true as only gamma- and x-rays detected.
Given that, it will probably work as advertised.
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The Volatile Chemist
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| Quote: Originally posted by Sulaiman | A colleage here at work who is into radioactivity who I just asked,
recognised it immediately and said that these are just large area photodiodes with a low gate leakage fet amplifier.
Sounds true as only gamma- and x-rays detected.
Given that, it will probably work as advertised. |
Cool. That means they'd be mighty cheap to make. I'll have to look to see if there are any schemas available.
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SmellNoEvil
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Grignard question
What would the product of a Grignard Reaction using isopropyl magnesium bromide and acetone be?
There's not much information about the compound available.
[Edited on 27-2-2016 by SmellNoEvil]
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The Volatile Chemist
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| Quote: Originally posted by SmellNoEvil | What would the product of a Grignard Reaction using isopropyl magnesium bromide and acetone be?
[Edited on 27-2-2016 by SmellNoEvil] |
I hope you don't mind my not using the IUPAC name. In SMILES code:
CC(C)MgBr + CC(=O)C --> CC(C)C(C)(C)OMgBr
When neutralized to the alcohol, you get:
CC(C)C(C)(C)O, or 1,1,2-trimethylpropanol. I think. My prioritizing of groups in IUPAC is bad...
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DraconicAcid
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| Quote: Originally posted by The Volatile Chemist | | Quote: Originally posted by SmellNoEvil | What would the product of a Grignard Reaction using isopropyl magnesium bromide and acetone be?
[Edited on 27-2-2016 by SmellNoEvil] |
I hope you don't mind my not using the IUPAC name. In SMILES code:
CC(C)MgBr + CC(=O)C --> CC(C)C(C)(C)OMgBr
When neutralized to the alcohol, you get:
CC(C)C(C)(C)O, or 1,1,2-trimethylpropanol. I think. My prioritizing of groups in IUPAC is bad... |
2,3-dimethyl-2-butanol
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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1.6180339
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Could this be useful ?
In areas with too much sulfur dioxide, could we[in a industrial process] convert it into sulfur trioxide, make it react with water to create sulfuric
acid and then make it react with sucrose to make carbon which could be used for industrial processes?
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Texium
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Threads Merged
27-2-2016 at 18:38 |
luminouspath
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H2O2
I'm planning on concentrating some 12% H2O2 to 30% by removing water under vacuum at ~30c, is this as safe as I think it is?
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DubaiAmateurRocketry
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So i guess if you guys subscribe to some major scientific magazines like, scientific american, or new scientist for example, you might have seen one
of the posts like working memory correlates to ability to ignore.
Now sorry if this question sound ignorant, I havent studied much neuroscience, but if I practice my ability to ignore things, such as ignoring a radio
while doing something else, would that improve my memory in any way?
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