1. Molarity 1 pts req 2. Mass Percent 3: Molality 1 pts 2req 4: Mole Fraction and Mass Percent 1 pts req 5. Molar Mass f

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1 Molarity 1 Pts Req 2 Mass Percent 3 Molality 1 Pts 2req 4 Mole Fraction And Mass Percent 1 Pts Req 5 Molar Mass F 1 (35.08 KiB) Viewed 45 times

1 Molarity 1 Pts Req 2 Mass Percent 3 Molality 1 Pts 2req 4 Mole Fraction And Mass Percent 1 Pts Req 5 Molar Mass F 2 (32.44 KiB) Viewed 45 times

1 Molarity 1 Pts Req 2 Mass Percent 3 Molality 1 Pts 2req 4 Mole Fraction And Mass Percent 1 Pts Req 5 Molar Mass F 3 (30.62 KiB) Viewed 45 times

1 Molarity 1 Pts Req 2 Mass Percent 3 Molality 1 Pts 2req 4 Mole Fraction And Mass Percent 1 Pts Req 5 Molar Mass F 4 (35.13 KiB) Viewed 45 times

1. Molarity 1 pts req 2. Mass Percent 3: Molality 1 pts 2req 4: Mole Fraction and Mass Percent 1 pts req 5. Molar Mass from Bolling Elevatio... 1 pts 2req 1 pts req Not Submitted Question Question Question 6. Osmotic Pressure Calculations 1 pts 2req 7: Osmotic Pressure: Calculate Mol... 1 pts req Boiling Point Elevation/Freezing Point Depression AT = m K where, for freezing point depression: AT = T(pure solvent) - T(solution) and for boiling point elevation: AT = T(solution) - T(pure solvent) m = (# moles solute / Kg solvent) Kb boiling point elevation constant. Kt = freezing point depression constant. Ko and Kr depend only on the SOLVENT. Below are some common values. Use these values for the calculations that follow. Solvent Water Ethanol CH₂CH₂OH Chloroform CHCl3 Benzene C₂H6 Diethyl ether CH₂CH₂CH₂CH3 Formula H₂O [References Kb(°C/m) Kr(°C/m) 0.512 1.86 1.22 1.99 3.67 2.53 2.02 5.12

1. Molarity 1 pts 2req 2. Mass Percent Motality 4. Mole Fraction and Mass Percent 5. Molar Mass from Bolling Elevatio... Preparation Question Question Question 6. Osmotic Pressure Calculations 1 pts 2req G 1 pts 2req 1 pts 2req 1 pts 2req 1 pts req O Not Visited 7. Osmotic Pressure: Calculate Mol... 1 pts req [Review Topice) References Use the References to access important values if needed for this question. The freezing point of ethanol, CH3CH₂OH, is -117.300 °C at 1 atmosphere. Ki(ethanol) = 1.99 °C/m In a laboratory experiment, students synthesized a new compound and found that when 11.24 grams of the compound were dissolved in 264.8 grams of ethanol, the solution began to freeze at -117.761 °C. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound? g/mol Submit Answer Retry Entire Group 2 more group attempts remaining G

1. Molarity 2. Mass Percent 3. Molality 4. Mole Fraction and Mass Percent 1 pts req 1 pts 2req 1 pts 2req 1 pts 2req 5. Molar Mass from Bolling Elevatio... 1 pts 2req Preparation Question Question Question 6. Osmotic Pressure Calculations Not Visited 1 pts 2req 7. Osmotic Pressure: Calculate Mol... 1 pts req Use the References to access important values if needed for this question. The boiling point of water, H₂O, is 100.000 °C at 1 atmosphere. K(water) 0.512 °C/m In a laboratory experiment, students synthesized a new compound and found that when 14.23 grams of the compound were dissolved in 284.1 grams of water, the solution began to boil at 100.413 °C. The compound was also found to be nonvolatile and a non- electrolyte. What is the molecular weight they determined for this compound? g/mol Submit Answer Retry Entire Group 2 more group attempts remaining

Assignment-2 Molarity 2. Mass Percent 1 pts 2req 1 pts 2req 3. Molality 4. Mole Fraction and Mass Percent 1 pts 2req 5. Molar Mass from Bolling Elevatio... 1 pts req Preparation Question Question 1 pts 2req 6. Osmotic Pressure Calculations 1 pts req 7. Osmotic Pressure: Calculate Mol... 1 pts req Visited [Review Topics) [References] Use the References to access important values if needed for this question. The freezing point of benzene, C6H6, is 5.500 °C at 1 atmosphere. Kr(benzene) = 5.12 °C/m In a laboratory experiment, students synthesized a new compound and found that when 13.23 grams of the compound were dissolved in 211.0 grams of benzene, the solution began to freeze at 4.086 °C. The compound was also found to be nonvolatile and a non- electrolyte. What is the molecular weight they determined for this compound? g/mol Submit Answer Retry Entire Group 2 more group attempts remaining CO