lab report for experiment 13 behavior of gases : molar mass of a vapor

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queen_honey_blossom answered 2 years ago

Molar Mass by Freezing Point Depression I am doing a latenite lab on Molar Mass by...

Molar Mass by Freezing Point Depression I am doing a latenite lab on Molar Mass by Freezing Point Depression. I have asked this question on Course Hero and twice on Chegg and the tutors keep giving me different answers. Sample 2 has a van't Hoff factor of 2. It began freezing at -3.6. I added 2 g of the unknown to 10 mL of water. I was given that the Kf for water is 1.86. Calculate the molar mass of...

Chem Question - Gases Molar Mass N = 14.01 g/mol Molar Mass H2O = 18.016 g/mol...

Chem Question - Gases Molar Mass N = 14.01 g/mol Molar Mass H2O = 18.016 g/mol Vapor Pressure of Water at 25 C is 23.76 torr Vapor Pressure of Water at 65 C is 187.54 torr (Show all work and calculations, include units in answer. If calculations must be used in several parts, rounding should be made to 6 decimal points to ensure accuracy. Final Answers can be rounded to 3 decimal points.) A syringe filled with air can be...

Vapor pressure of a pure liquid lab experiment Why is the value of the heat of...

Vapor pressure of a pure liquid lab experiment Why is the value of the heat of vaporization for sucrose greater than water? comment on the effect of a non-electrolyte such as sucrose on the vapor pressure and delta vap H. What can be the possible systematic source of error in this experiment?

This is a Lab Report about an experiment. The experiment should be about HEAT and TEMPERATURE...

This is a Lab Report about an experiment. The experiment should be about HEAT and TEMPERATURE with any example. Title: Hypothesis: Statement that the experiment is going to test, prove, or disprove. What is the point of the experiment? (Make a statement that the experiment will either prove or disprove.) Overview: Brief summary of what occurred in the experiment or what was tested and how. Uncertainty&Error: Can you trust your data? Considerations: 1) What factors may have affected or biased...

Calculate the molar mass of each Compound : Gycerol NaCl CaCl This is for the lab...

Calculate the molar mass of each Compound : Gycerol NaCl CaCl This is for the lab experiment on Molar Mass and freezing point, and these are the results l got. Solution. Freezing point in degreesC H2O. 0 Gycerol. -3.5 NaCl. -5.7 CaCl. -4.0 How do these molar masses compare to the theoretical. Calculate the percent error. glycerol I have 0.04470, and 0.0383 for NaCl and 0.01792 for CaCl. I know there is a constant l am supposed to use to...

In an experiment similar to this one, the solubility of potassium hydrogen oxalate (KHC2O4, molar mass=...

In an experiment similar to this one, the solubility of potassium hydrogen oxalate (KHC2O4, molar mass= 128.13 g mol) is determined. A 5.0 10^-2 M aqueous solution of KCI is saturated with potassium hydrogen oxalate. The following equilibrium results: KHC2O4(s)-----K^+ + HC2O4^- Following saturation, the solution is filtered. Portions of the filtered saturated solution are titrated with 0.1172M NaOH solution. The following date are obtained: Volume of saturated KHC2O4 Solution Titrated, mL Determination #1 25.2 Determination #2 29.1 Volume of...

In the Force lab, we use a small lab car with mass m=5 Kg, the experiment...

In the Force lab, we use a small lab car with mass m=5 Kg, the experiment is on a horizontal table, on the car is acting a pulling force F= 20 N and the kinetic friction force Fr is acting as well. The car initially is at rest, and take 6.0 seconds to reach the velocity of 8.5 m/s. a) Calculate the magnitude of the friction force Fr acting on the car? b) We remove the pulling force when the...

The vapor pressure of pure carbon tetrachloride, CCl4, (molar mass 153.82 g/mol) is 0.354 atm, and...

The vapor pressure of pure carbon tetrachloride, CCl4, (molar mass 153.82 g/mol) is 0.354 atm, and the vapor pressure of pure chloroform, CHCl3 (molar mass 119.38 g/mol), is 0.526 atm at 316 K. A solution is prepared from equal masses of the two compounds at this temperature. If the vapor over the original solution is condensed and isolated into a separate flask, what with the vapor pressure of the chloroform be above this new solution?

13. a) A generic salt, AB, has a molar mass of 321 g/mol and a solubility...

13. a) A generic salt, AB, has a molar mass of 321 g/mol and a solubility of 8.80 g/L at 25 °C. What is the Ksp of this salt at 25 °C? b) The Ksp of manganese(II) hydroxide, Mn(OH)2, is 2.00 × 10-13. Calculate the molar solubility of this compound. c) Above what Fe2 concentration will Fe(OH)2 precipitate from a buffer solution that has a pH of 9.73? The Ksp of Fe(OH)2 is 4.87×10-17. d) What concentration of SO32– is...

I am doing a lab report on Beer's Law. Equation is absorbance= molar extinction coefficient x...

I am doing a lab report on Beer's Law. Equation is absorbance= molar extinction coefficient x path length x concentration. In lab, I prepared a stock solution of .25M and filled it up to 100ml. I prepared 3 more diluted solutions. Dilution 1 was .2M where I added 8ml of stock solution and 2 ml of water for total volume of 10ml. Dilution 2 was 6ml of stock solution and added 4 ml water for total volume of 10ml. Dilution...

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