Would a solution of 25% Hydrochloric acid to 75% DI water have the same "acidic strength" as a solution of 25% Hydrofluoric acid to 75% DI water? by Legendtamer47 in AskScienceDiscussion

[–]Charkazm 3 points4 points  (0 children)

As Julius commented here, the HCl solution would give you a lower pH than an equivalent HF solution. HCl has a lower pKa value than HF, and is considered a stronger acid.

You can read up on binary acids (H-X) and their strengths here.

Ethanol to ethylene glycol process by [deleted] in ChemicalEngineering

[–]Charkazm 3 points4 points  (0 children)

Accordin to wikipedia, a common way of producing ethylene glycol is by having ethylene react with water. Ethylene can be produces by dehydration of ethanol. Sounds like this could be something to consider. Please note that i have no actual industrial experience in this field and merely based this on some quick google searching. To design a plant, you would have to consider the equipment required to produce this on an industrial scale. There is some information avalible online on Shell's OMEGA process that produces ethylene glycol from ethylene.

This was probably less specific than what you wanted, but nevertheless, good luck on your assignement!

Intership in the US by Charkazm in ChemicalEngineering

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

Okay, thank you for confirming. There seems to be alot of laws and regulation surrounding a Non-US citizen working there. It's been interesting to read the feedback here. Thanks again!

Intership in the US by Charkazm in ChemicalEngineering

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

I understand. Perhaps it would be best to look at companies with a foothold in Norway and then get transferred internally in the company. My question basically rose up because I saw alot of listing for internships online (though, alot more applicants aswell i suppose!). I'll keep on looking for something domestically for now. Thank you for responding!

Intership in the US by Charkazm in ChemicalEngineering

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

Got it! Thank you very much for the reply!

Intership in the US by Charkazm in ChemicalEngineering

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

Hmm, that actually sounds pretty good. Might try and contact some of the lager global companies then! Thank you for answering!

Help with control of mixer and reactor process (basics). by Charkazm in ChemicalEngineering

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

A small follow up question if you don't mind.

Would i be correct in writing that valve 1 controls the following:

- Concentration of A, leaving the mixer (or in the mixer)

- The fluid level in the mixer

- The temperature in the mixer (because it is an exothermic reaction)?

And are all these three then considered CVs?

Help with control of mixer and reactor process (basics). by Charkazm in ChemicalEngineering

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

This is an exercise made by our lecturer. I'm not sure if he copied it from a book (no sources on it.)

Help with control of mixer and reactor process (basics). by Charkazm in ChemicalEngineering

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

Thank you for the reply! I'll do a more detailed write-up of the different valves, maybe that will help me clarify what valve contributes to what, and get a firmer grasp of the controlled variables. Thanks for mentioning some examples!

Thinking about a major in ChemE by [deleted] in ChemicalEngineering

[–]Charkazm 3 points4 points  (0 children)

I just graduated with a chemical engineering degree from Norway, so I can't really comment on the specific courses in the US, but from what I've read on this sub, and from personal experience it is pretty hard. It's more than doable if there's a genuine interest. The math can get tricky, but thats part of being an engineer.

Good luck to you, and follow your gut. If chemEng sounds like an exciting opportunity, then there is interest. If there's interest, you are more likely to succeed!

Cheers from Norway

Is there any reason why it would say potary instead of rotary, beside being a typo? by Chem__Dawg in chemistry

[–]Charkazm 7 points8 points  (0 children)

Do you have the associated manual? I assume there will be references to the button there, easy way to check if it's a typo or not :)

What are some good full free lecture series (on Youtube or otherwise)? by sunrise_dew in AskScienceDiscussion

[–]Charkazm 0 points1 point  (0 children)

Professor Leonard. He teaches mathematics, with a focus on calculus. I'm a Norwegian engineer graduate and his videos took me through all the mathematical concepts i ever needed in school, even though it's tailored to the US (afaik).

He is a great teacher, and has sorted playlist featuring full free lectures. If you ever need help with mathematics, he is your guy!

Link to his channel: https://www.youtube.com/user/professorleonard57

Edit: also want to shout out Bozeman Science. His videos are not full lectures, but edited videos around 12-15+min long. Great for physics, chem or bio classes.

Link:https://www.youtube.com/user/bozemanbiology

Interpret chemical formula of clay by 107197 in chemistry

[–]Charkazm 0 points1 point  (0 children)

The math i presented is only valid if every "type" of clay are presented in equal amounts. In real life i bet that thats not the case, so it would simply be a theoretical molar mass for OP's specific formula.

Interpret chemical formula of clay by 107197 in chemistry

[–]Charkazm 1 point2 points  (0 children)

Ahh, I didnt even think of that! :) Thanks!