The molar mass of an enzyme was determined by dissolving it in water, measuring the osmotic...
The molar mass of an enzyme was determined by dissolving it in water, measuring the osmotic pressure at 20 degrees Celsius, and extrapolating the data to zero concentration. The followign data were obtained: c/(mg cm^-3) 3.211 4.618 5.112 6.722 h/cm 5.746 8.238 9.119 11.990 Calculate the molar mass of the enzyme
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The molar mass of an enzyme was determined by dissolving it in
water, measuring the osmotic...
A) Calculate the osmotic pressure of a solution containing 16.75 mg of hemoglobin in 15.7 mL...
A) Calculate the osmotic pressure of a solution containing 16.75 mg of hemoglobin in 15.7 mL of solution at 22 ∘C . The molar mass of hemoglobin is 6.5×104 g/mol. B) A 2.400×10−2M solution of NaCl in water is at 20.0∘C. The sample was created by dissolving a sample of NaCl in water and then bringing the volume up to 1.000 L. It was determined that the volume of water needed to do this was 999.4 mL . The density...
A solution was made by dissolving 5.60 mg of hemoglobin in water to give a final...
A solution was made by dissolving 5.60 mg of hemoglobin in water to give a final volume of 1.00 mL. The osmotic pressure of this solution was 2.14×10-3 atm at 25.0°C. Calculate the molar mass of hemoglobin, which is a molecular compound and a nonelectrolyte. Give your answer in g/mol.
A compound is found to have a molar mass of 598 g/mol. If 35.8 mg of the compound dissolved in enough water to make 175...
A compound is found to have a molar mass of 598 g/mol. If 35.8 mg of the compound dissolved in enough water to make 175 ml of solution at 25 degrees C what is the osmotic pressure of the resulting solution ?
In order to determine the molar mass of an unknown protein, 368.7 mg of the protein...
In order to determine the molar mass of an unknown protein, 368.7 mg of the protein is dissolved in enough water to give 50.00 mL of solution. The osmotic pressure of this solution is determined to be 2.94 mmHg at 298 K. Estimate the molar mass of this protein. Give an answer to the 100's. Do not include units in your response, only digits.
The molar mass of an unknown solid compound was determined by measuring the freezing point depression of 1.50 grams of...
The molar mass of an unknown solid compound was determined by
measuring the freezing point depression of 1.50 grams of the
unknown in 20.00 grams of phenol.
a.) do not need the cooling curve.
b.) please show calculations
3. The molar mass of an unknown solid compound was determined by measuring the freezing poist depression of 1.50 grams of the unknowm in 20.00 grams of Phenol Phenol &Unknown nutes)Temperature 12.5 8.6 1.0 8.2 1.5 6.9 7.8 7.7 .0 75 4.0...
A solution of F− is prepared by dissolving 0.0887±0.0006 g NaF (molar mass = 41.989±0.001 g/mol) in 152.00±0.09 mL of water. Calculate the concentration of F− in solution and...
A solution of F− is prepared by dissolving 0.0887±0.0006 g NaF (molar mass = 41.989±0.001 g/mol) in 152.00±0.09 mL of water. Calculate the concentration of F− in solution and its absolute uncertainty.
8. What is the final boiling point of a 1.25 molal solution of sugar in water?...
8. What is the final boiling point of a 1.25 molal solution of sugar in water? The Kb for water is 0.512 C/m. (For sugar i = l.) 9. A solution was prepared by dissolving 0.52 mol hexane into 400g CCl4. What is the change in freezing point of this solution? Carbon tetrachloride has a freezing point depression constant of 29.8 Cm,and freezes at-23。. 10. A solution was prepared by dissolving 0.26 moles of ethanol (C2HsOH) into 750g Diethyl ether....
Using the data below - calculate the experimentally determined molar volume of CO2 at STP given...
Using the data below - calculate the experimentally determined molar volume of CO2 at STP given the information below: Lab Temp (T1) = 23.0 Celcius Lab Pressure (P1) = 76.3 cm HG Mass of a dry, empty stopped flask (m1) = 82.715g Mass of the same stopped flask filled with CO2 (m2) = 82.795g Volume of Water contained by stopped flask (v1) = 144.00 mL
LAB 7 DETERMINATION OF THE MOLAR VOLUME OF A GAS AND THE GAS CONSTANT. R PRE-LAB...
LAB 7 DETERMINATION OF THE MOLAR VOLUME OF A GAS AND THE GAS CONSTANT. R PRE-LAB QUESTIONS 1. A student did the experiment described except she used Al foil instead of Mg. Her data table included the following values. 0.0352 g 19.08 C Mass of Al Temperature Barometric pressure Volume of H, gas Answer the following questions based on this data table. 762.5 mm Hg 46.92 mL a. Write the balanced equation for the reaction between Aluminum and hydrochloric acid....
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...
In order to determine the molar mass of an unknown protein, 368.7 mg of the protein is dissolved in enough water to give 50.00 mL of solution. The osmotic pressure of this solution is determined to be 2.94 mmHg at 298 K. Estimate the molar mass of this protein. Give an answer to the 100's. Do not include units in your response, only digits.
The molar mass of an unknown solid compound was determined by
measuring the freezing point depression of 1.50 grams of the
unknown in 20.00 grams of phenol.
a.) do not need the cooling curve.
b.) please show calculations
3. The molar mass of an unknown solid compound was determined by measuring the freezing poist depression of 1.50 grams of the unknowm in 20.00 grams of Phenol Phenol &Unknown nutes)Temperature 12.5 8.6 1.0 8.2 1.5 6.9 7.8 7.7 .0 75 4.0...
8. What is the final boiling point of a 1.25 molal solution of sugar in water? The Kb for water is 0.512 C/m. (For sugar i = l.) 9. A solution was prepared by dissolving 0.52 mol hexane into 400g CCl4. What is the change in freezing point of this solution? Carbon tetrachloride has a freezing point depression constant of 29.8 Cm,and freezes at-23。. 10. A solution was prepared by dissolving 0.26 moles of ethanol (C2HsOH) into 750g Diethyl ether....
LAB 7 DETERMINATION OF THE MOLAR VOLUME OF A GAS AND THE GAS CONSTANT. R PRE-LAB QUESTIONS 1. A student did the experiment described except she used Al foil instead of Mg. Her data table included the following values. 0.0352 g 19.08 C Mass of Al Temperature Barometric pressure Volume of H, gas Answer the following questions based on this data table. 762.5 mm Hg 46.92 mL a. Write the balanced equation for the reaction between Aluminum and hydrochloric acid....
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...
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