April 13, 2021, 07:38:46 PM
Forum Rules: Read This Before Posting


Recent Posts

Pages: 1 [2] 3 4 ... 10
11
Can arginine form a salt bridge to the side chain of a different amino acid, and if so, what kind of amino acid? 
12
A lot depends on the exact composition. Are these all components of the mixture?
Plus low amounts of borax pentahydrate (aq) added to this industrial waste dust (Na2SO4 with impurities). It became like a suspension.

Here is the chemical reactions for generation of this industrial waste dust:
Quote
2 NaHCO3 + chaleur → Na2CO3 + CO2 + H2O
2 NaHCO3 + SO2 + 1/2 O2 → Na2SO4 + H2O + 2 CO2
NaHCO3 + HCl → NaCl + H2O + CO2
NaHCO3 + HF → NaF + H2O + CO2
13
Undergraduate General Chemistry Forum / Re: thermodynamics
« Last post by mjc123 on Today at 06:42:26 AM »
Neither do I. There must be something missing. Are you sure you have transcribed it correctly?
What is meant by "determine Cl2O(g)"? Do they mean determine S° of Cl2O(g)?
14
A lot depends on the exact composition. Are these all components of the mixture?

Check MSDS for each salt present, choose the worst case to design your procedures.
15
Na2SO4, NaF, Na2CO3 and NaCl are not related to be carcinogenic and they don't produce any gases in reaction with water.

If any gases are present they may come from other impurities (f. e. metallic sodium will produce H2), but it is hard to say without knowledge of industrial process.

As of fume cupboard - you can always do it outdoors instead.
16
Citizen Chemist / Re: PRESERVING FLOWERS
« Last post by Zimmy Nguyen on Today at 05:42:50 AM »
Hi bro,
I knew this video 3 weeks ago.
I am very interested in this project. I am trying to find all documents related to make forever roses and I have a lab to make it, i am on the way to find forever rose  :) :) :)
I think that you need to add Banking Soda in step 2 (active  nonionic surfactant), replace food color by fabric dye color. It will be better for your flowers. let's try and let me know the result, bro!
I have some documents, it may helpful for you.
Regards,
Zimmy (Ms)

https://patents.google.com/patent/CN109380215A/en
https://patents.google.com/patent/KR20080020034A/en
https://patents.google.com/patent/KR100851211B1/en
17
@metallurgy Nothing will happen, but solution (water) could be harmful if drinked be somebody (large doses of sodium fluoride are harmful).

Okay , thanks for the info, what about carginogenity? etc. health affects if inhaled via breathing the gases? Maybe we have to purchase a fume cupboard and do it inside of it?
18
@metallurgy Nothing will happen, but solution (water) could be harmful if drinked by somebody (large doses of sodium fluoride are harmful).
19
And what do you expect?

You combine mixture of solid salts with water. What is the most likely outcome?

The question was intended to ask about safety outcomes. Like if there is a risky/dangerous gases appears or not?
20
And what do you expect?

You combine mixture of solid salts with water. What is the most likely outcome?
Pages: 1 [2] 3 4 ... 10