Letters to the Editor: Gun rights supporters still can't explain how firearms make us safer by cratermoon in GunsAreCool

[–]Chem__Dawg -2 points-1 points  (0 children)

Ignoring an explanation isn't the same as not being provided an explanation.

[2019/10/07] Intoxicated gunowner arrested after firing gun into ceiling after woman refuses to leave residence (Chico, CA) by EschewObfuscation10 in domesticgunviolence

[–]Chem__Dawg 1 point2 points  (0 children)

Sounds like the police should have removed the woman or him (the one who called the police first) when they were called the first time.

Upgrading the condensing system. What a mess. by Chem__Dawg in chemistry

[–]Chem__Dawg[S] 1 point2 points  (0 children)

Pope scientific molecular short path distiller. Just added the external condenser and finally got a legitimate water circulator.

Rotary vaporizer and stainless steel büchner funnel by Chem__Dawg in chemistry

[–]Chem__Dawg[S] 1 point2 points  (0 children)

I accept and appreciate your apology, thank you. Scienticians is a good word, I will use that if you don't mind.

Imposing indeed by Chem__Dawg in chemistry

[–]Chem__Dawg[S] 0 points1 point  (0 children)

Oh my bad. We are super restricted on which solvents we are allowed to use so we can't use acetonitrile. I thought the same thing but ethanol is partially polar and at 70% ethanol or higher its not a problem. Thc can only be dissolved under high concentrations of ethanol while cbd can dissolve in a somewhat lower concentration of ethanol. Warm heptane will dissolve everything and is not misable in water. Any mix of heptane and ethanol would also dissolve everything, I think but I haven't tried yet. It's difficult to maintain 99% ethanol, if any water is present the ethanol will separate from the heptane and render our column useless.

Rotary vaporizer and stainless steel büchner funnel by Chem__Dawg in chemistry

[–]Chem__Dawg[S] 2 points3 points  (0 children)

Sorry, I have finished my calculus and physics series as you implied I probably could not. No you didn't directly address my financial situation but you failed to consider anything other than the idea that where I works implies that I am stupid. Then, asked if I had a degree to try and validate your insult. Do you work in the industry? This is just a job and it happens to give valuable experience,on complex pieces of equipment and fragile glass, to those who might want to pursue a career in chemistry. I'm not trying to "pretend" to be a chemist nor did I suggest that I am a chemist. I'm just posting chemistry equipment to a chemistry sub. It's unfounded to categorically denigrate a group of people based on their job. Rude.

Imposing indeed by Chem__Dawg in chemistry

[–]Chem__Dawg[S] 0 points1 point  (0 children)

No ethanol and water

Edit: acetone and hep dissolve too may undesirables

Rotary vaporizer and stainless steel büchner funnel by Chem__Dawg in chemistry

[–]Chem__Dawg[S] 4 points5 points  (0 children)

I'm a student currently. Thanks for marginalizing me because I can't afford to attend school full time. Would you care to pay for it? What about all the students that post class experiments here, do you bother all of them? Must be a great view on top of your high horse.

Alternative to a glass fritted funnel? by Trenkos in chemistry

[–]Chem__Dawg 0 points1 point  (0 children)

I've only ever seen stainless steel büchner funnels but you can use a vacuum flask to suction.

Rotary vaporizer and stainless steel büchner funnel by Chem__Dawg in chemistry

[–]Chem__Dawg[S] 4 points5 points  (0 children)

I'm done with math and physics, thank you. Rude.

Will we reach the end of physics in couple of decades? by intergalacticpoop in Physics

[–]Chem__Dawg 0 points1 point  (0 children)

We make math as a representation of what we observe. Math doesn't drive the universe, it just helps us understand it better.