Which of the following methods is NOT suitable for concentrating a protein solution?
Simple distillation
Ultrafiltration
Lyophilization
Dialysis against a concentrated polymer solution
Related Questions
A 0.5 molal aqueous solution of urea () is prepared. What is the mole fraction of urea?
0.0089
0.0090
0.50
0.99
If 1 kg of solvent contains 2 moles of solute, what is the molality of the solution?
1 molal
2 molal
0.5 molal
4 molal
Which of the following concentration terms is NOT affected by temperature?
Molality
Molarity
Normality
Formality
What is the mole fraction of the solute in a 1.00 m aqueous solution of glucose?
0.0177
0.0180
0.982
1.00
Molality is defined as the number of moles of solute per:
Liter of solution
Kilogram of solvent
Kilogram of solution
Liter of solvent
How many moles of solute are present in a 2 molal solution containing 250g of solvent?
0.25 moles
0.5 moles
1 mole
2 moles
Which of the following describes a 0.5 molal solution?
0.5 moles of solute in 1 kg of solvent
1 mole of solute in 0.5 kg of solvent
0.5 moles of solute in 0.5 kg of solvent
1 mole of solute in 1 kg of solvent
What is the molality of a solution where the mole fraction of the solute is 0.02 and the solvent is water?
1.13 m
0.02 m
0.98 m
55.51 m
Which of these is the correct formula for calculating molality?
Moles of solute / Liters of solution
Moles of solute / Kilograms of solvent
Grams of solute / Liters of solution
Grams of solute / Kilograms of solvent
