1. The formula for a low molecular weight starch is (C6H10O5)n where n is 200 on...
1. The formula for a low molecular weight starch is (C6H10O5)n where n is 200 on average. If 0.798 g of this starch is dissolved in 100.0 ml of water, what is the osmotic pressure of the solution at 25 oC?
2. A solution was made by dissolving CaCl2 in enough water to prepare 255 mL of solution. The resulting solution exerted an osmotic pressure of 125 torr at 35 oC. What mass of CaCl2 was dissolved in the solution?
Homework Answers
Add Answer to:
1. The formula for a low molecular weight starch is (C6H10O5)n
where n is 200 on...
The average formula for low molecular mass starch is (C6H10O5)200. When 0.789g of starch is dissolved...
The average formula for low molecular mass starch is (C6H10O5)200. When 0.789g of starch is dissolved to make 100.0 mL of solution, what is the Osmotic pressure, in mmHg at 25 celsius?
Calculate the molecular weight of a small protein if a 7.0-g sample of the protein dissolved...
Calculate the molecular weight of a small protein if a 7.0-g sample of the protein dissolved in enough water to make 7.00 x 10 2 mL of solution has an osmotic pressure of 3.8 mmHg at 25.0°C.
5. 1.024 g of an unknown molecular solid are dissolved in enough water to produce 200.0...
5. 1.024 g of an unknown molecular solid are dissolved in enough
water to produce 200.0 mL of solution. The osmotic pressure at 25C
is 278.0 torr. What is the molar mass of the solid?
6a. Calculate the van't Hoff factor of a 0.085M potassium
sulfate solution that has an osmotic pressure of 5.4atm at
25C
5. 1.024 g of an unknown molecular solid are dissolved in enough water to produce 200.0 ml. of solution. The osmotic pressure at 25...
5. 1.024 g of an unknown molecular solid are dissolved in enough water to produce 200.0...
5. 1.024 g of an unknown molecular solid are dissolved in enough water to produce 200.0 mL of solution. The osmotic pressure at 25°C is 278.0 torr. What is the molar mass of the solid? 1342.5 g/mol
I do not know even the formula for this problem A solution is prepared by dissolving...
I do not know even the formula for this problem
A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water to make 1.00 L of solution. The osmotic pressure of this solution is 0.750 atm at 25.0 degree C. What is the molecular weight (g/mol) of the unknown solute?
You want to measure the molecular weight of a protein molecule so you measure the osmotic...
You want to measure the molecular weight of a protein molecule so you measure the osmotic pressure of a protein solution you make. If 0,10 g of protein is dissolved in 5.0 ml. of solution, n = 0.05 atm at 25°C. What is the molecular weight of the protein? 820 g/mol Anamn
A solution is prepared by dissolving 3 mg of an unknown protein in 5 mL of...
A solution is prepared by dissolving 3 mg of an unknown protein in 5 mL of water. The resulting solution has an osmotic pressure of 7.23 torr at 25 °C. What is the molecular weight of the protein? 4.45 ´ 103 g mol-1 3.09 ´ 103 g mol-1 1.54 ´ 103 g mol-1 2.03 g mol-1 108 g mol-1 Please explain!
1) At physiological temperature (37OC) the osmotic pressure of blood is 7.65 atm. What concentration (%...
1) At physiological temperature (37OC) the osmotic pressure of blood is 7.65 atm. What concentration (% W/V) of potassium chloride (KCl, MW = 74.5) solution has the same osmotic pressure of blood? Assume the specific gravity of the solution is 1. 2)An ophthalmic (eye drop) formulation contains 100 mEq of sodium chloride (molecular weight = 58.5 g/mole). Calculate the amount (in grams) of sodium chloride needed for the formulation. 3)Methanol (CH3OH, MW = 32) is a nonelectrolyte. What is the...
Could someone help me with these? General Chemistry - Worksheets Potentially Useful Information Sucrose molecular mass...
Could someone help me with these?
General Chemistry - Worksheets Potentially Useful Information Sucrose molecular mass 342.30 g/ mol Density of propylene glycol at 25 C 1.036 g/cm Density of water at 25 C 0.0070 g/m the boiling point elevation constant of water 0.52 "Cim K Key Questions Key Questions (Show your work on all questions.) 1. a. What is mollity of a solution made by dissolving 137.9 g of Sucrose in 414.19 of water? Answer b. What is molarity...
i dont understand why the molecular weight i calculated (42.012 g/mol) for my unknown liquid (acetone)...
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
5. 1.024 g of an unknown molecular solid are dissolved in enough
water to produce 200.0 mL of solution. The osmotic pressure at 25C
is 278.0 torr. What is the molar mass of the solid?
6a. Calculate the van't Hoff factor of a 0.085M potassium
sulfate solution that has an osmotic pressure of 5.4atm at
25C
5. 1.024 g of an unknown molecular solid are dissolved in enough water to produce 200.0 ml. of solution. The osmotic pressure at 25...
5. 1.024 g of an unknown molecular solid are dissolved in enough water to produce 200.0 mL of solution. The osmotic pressure at 25°C is 278.0 torr. What is the molar mass of the solid? 1342.5 g/mol
I do not know even the formula for this problem
A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water to make 1.00 L of solution. The osmotic pressure of this solution is 0.750 atm at 25.0 degree C. What is the molecular weight (g/mol) of the unknown solute?
You want to measure the molecular weight of a protein molecule so you measure the osmotic pressure of a protein solution you make. If 0,10 g of protein is dissolved in 5.0 ml. of solution, n = 0.05 atm at 25°C. What is the molecular weight of the protein? 820 g/mol Anamn
Could someone help me with these?
General Chemistry - Worksheets Potentially Useful Information Sucrose molecular mass 342.30 g/ mol Density of propylene glycol at 25 C 1.036 g/cm Density of water at 25 C 0.0070 g/m the boiling point elevation constant of water 0.52 "Cim K Key Questions Key Questions (Show your work on all questions.) 1. a. What is mollity of a solution made by dissolving 137.9 g of Sucrose in 414.19 of water? Answer b. What is molarity...
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago