All Questions
6
questions
0
votes
1
answer
87
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How to evenly mix NaCl and Lactose
Q:
You have 10 g NaCl (s) and 90 g Lactose (s) (both easily soluble in water.) You want to achieve a 100 g mixture of these two compounds in solid form where they are completely evenly mixed. (A 1 mg ...
- 9
8
votes
2
answers
2k
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How can we tell the particle size of solutes in solutions?
This is a general question in regard to solutes dissolving into solvents. I am interested in the reality of the particle size of the solute during dissolution.
For example, take $\ce{NaCl}$ and ...
- 181
1
vote
0
answers
286
views
Why does adding PBS to a lipid+propylene glycol solution cause the lipid to precipitate?
I am trying to create an aqueous phospholipid suspension using ~50 mg of 1,2-dibehenoyl-sn-glycero-3-phosphocholine (DBPC), 13 mL of propylene glycol (PG), and 72 mL of phosphate-buffered saline (PBS)....
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2
votes
0
answers
197
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Alternative to water as solvent for lithium metaborate?
I want to prepare a sample of lithium metaborate ($\ce{LiBO2}$) and need to dissolve it for this purpose.
The only solvents I found so far are water and ethanol. In ethanol, one cannot dissolve ...
- 181
2
votes
2
answers
505
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Does removing solution affect a supersaturated solution
Given a mixture of: a saturated solution of a solute in a solvent together with excess of the solute compound as crystalline material.
If one were to change the bulk composition of the mixture by ...
- 123
0
votes
1
answer
31k
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How to calculate molality, molarity and mole fraction given density (g/mole)?
Calculate the molality, molarity and mole fraction of a $\ce{CuSO4}$
in a 17% m/m aqueous solution (density of the solution is 1.367 g/mole)
I did .17 * 1.367 to find grams of $\ce{CuSO4}$
and .83 * ...
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