ZuoTi.Pro
Question
Chemistry:
Molar mass determination and freezing point depression.
2. your unknown solute sample weighed 0.634 grams, but some of it stuck to the test tube wall when you were pouring it in and did not dissolve in the t-butyl alcohol, what sort of error will this cause in the calculated molar mass of your unknown solute? Explain. 3. What would be the freezing point of an aqueous solution that contains 10.3 grams of ethylene glycol (C2H4(OH02] in 100 mL of water?
science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

JThe caladatad molar mass iu be lit than the atual molar mass , ff the soamples noles O lers an the expedted lenea(y 01 mo mo

0 0
Add a comment
Know the answer?
Add Answer to:
Chemistry: Molar mass determination and freezing point depression. If your unknown solute sample weighed 0.634 grams,...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • If your unknown solute sample weighed 0.634 grams, but some of it stuck to the test...

    If your unknown solute sample weighed 0.634 grams, but some of it stuck to the test tube wall when you were pouring it in and did not dissolve in the t-butyl alcohol, what sort of error will this cause in the calculated molar mass of your unknown solute? Explain.

  • Freezing Point Depression: Determination of the Molar Mass of an Unknown Substance Laboratory Record Unknown Identifier...

    Freezing Point Depression: Determination of the Molar Mass of an Unknown Substance Laboratory Record Unknown Identifier #4 (All unknowns are nonelectrolytes, soi-1) Determination of the freezing point of pure l-butyl alcohol: (Record time-temperature data on the next page) 29.62 1. Mass of empty test tube 2. Mass of test tube and t-butyl alcohol after determination of freezing point of pure t-butyl alcohol 50.25 20.71 3. Mass of t-butyl alcohol Determination of the molar mass of an unknown: (Record time-temperature data...

  • for question 1 the molar mass of unknown is 102g/mol hation by Freezing Point Depression Vernier...

    for question 1 the molar mass of unknown is 102g/mol hation by Freezing Point Depression Vernier Logger Pro for Windows Section Post-Laboratory Questions (Use the space provided and additional paper if necessary. Record your nemerical answers in the boxes provided.) 1. Obtain the correct molar mass of your unknown from your laboratory instructor. Calculate the percent error in the molar mass that you found. Torg/mol percent error, 2. A student determined the freezing point of pure t-butyl alcohol following the...

  • Molar Mass Determination by Freezing Point Depression Calculate and enter the freezing point depression of a...

    Molar Mass Determination by Freezing Point Depression Calculate and enter the freezing point depression of a solution of 57.6 g ethylene glycol (C2H602) in 734 g H20. Kffor H20 is 1.86 °C kg/mol. °C -2.53 1 homework pts Submit Answer Incorrect. Tries 3/5 Previous Tries A solution which contains 71.9 g of an unknown molecular compound in 363 g of water freezes at -3.85°C. What is the molar mass of the unknown? g/mol 1homework pts Submit Answer Tries 0/5 Molar...

  • Molar Mass Determination by Freezing Point Depression Calculate and enter the freezing point depression of a...

    Molar Mass Determination by Freezing Point Depression Calculate and enter the freezing point depression of a solution of 65.1 g ethylene glycol (C2H602) in 792 g H20. Kffor H2O is 1.86 °C kg/mol. °C 1homework pts Submit Answer Tries 0/5 A solution which contains 60.9 g of an unknown molecular compound in 325 g of water freezes at -3.24°C. What is the molar mass of the unknown? g/mol 1homework pts Submit Answer Tries 0/5

  • Date Name Lab Section Partner(s) Determination of Molar Mass by Freezing Point Depression Data: Mass of...

    Date Name Lab Section Partner(s) Determination of Molar Mass by Freezing Point Depression Data: Mass of empty test tube 2.2.6! Mass of test tube plus approximately 10.0 g of benzophenone 33.39 The difference is the mass of benzophenone (solvent) 8 kg Mass of unknown (-1.0 g) 1:09: 48.50°c 42.08. Freezing point of pure benzophenone Freezing point of benzophenone containing the unknown The difference is A fp CO Calculations: (Show set-up with cancellation of units) 1. molality of solution 2. moles...

  • Molar mass determination by depression of freezing point lab I'm stuck on calculating the moles of...

    Molar mass determination by depression of freezing point lab I'm stuck on calculating the moles of solute.. How do I calculate it? Also can u please check if I've done everything else correctly.. The data I collected: Measured freezing point of pure water: 0.0 degrees Celsius Actual mass of solute used: 10.12g Freezing point of solution (observed): -3.4 Celsius Mass of solution: 84.7g Freezing point of a Solution of liqud unknown Freezing point depression: Trial #1. 0.0℃ (-3.4°C)= 3.4℃ Molality...

  • Post-Lab Material Experiment 19 Data and Calculations: Molar Mass Determination by Depression of the Freezing Point...

    Post-Lab Material Experiment 19 Data and Calculations: Molar Mass Determination by Depression of the Freezing Point 0.3 Name Section A. Measured Freezing Point of Pure Water B. Finding the Freezing Point of a Solution of Liquid Unknown Target mass of solute (Calculated based on the parameters in the instructions) Unknown # Liquid 3.5 Actual mass of solute used Trial Freezing point of solution (observed) -3.0 Mass of solution 116.6 Trial II Freezing point of solution -3.3 Mass of solution 101.3....

  • 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...

  • Lab 3: Determination of Molar Mass by Freezing Point Depression 1 During winter, several different "salts"...

    Lab 3: Determination of Molar Mass by Freezing Point Depression 1 During winter, several different "salts" are used to melt ice sodium chloride (NaCI), a mix of sodium chloride and magnesium chloride (NaCl and MgCla calcium magnesium acetate (CaMg(CHO)). Assume you have 1 mole of each of these in 1 kg of water. Compare the freezing point depressions of these three "salts." a. b. What is the ratio of moles of "salt" to freezing point depression for each? What is...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT