chem test - View Attempt Page 1 of 7 View Attempt 1 of 1...

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View Attempt 1 of 1 Title: Exam 1 Started: February 19, 2008 4:24 PM Submitted: February 19, 2008 5:26 PM Time spent: 01:01:50 Total score: 17/20 = 85% Total score adjusted by 0.0 Maximum possible score: 20 1. What is the strongest form of intermolecular force between solute and solvent in a solution of C 3 H 7 OH(l) in CH 3 OH(l)? Student Response Value Correct Answer Feedback 1. ion-dipole 0% 2. dipole- dipole 0% 3. hydrogen bonding 100% 4. dipole- induced dipole 0% 5. dispersion 0% Score: 0/1 2. Which of the following is more soluble in ethanol, CaCO 3 (s) or NaCl(s). Don't try to type the subscripts, just use letters and numbers. Student Response Value Correct Answer 1. CaCO3 0% Equals NaCl(s) (100%) Equals NaCl (100%) Equals sodium chloride (100%) Score: 0/1 3. Calculate the molality of a solution made when 161.7 g of HCl is dissolved in 817.3 g H 2 O Student Response Value Correct Answer Answer 5.426 100% 5.42 Page 1 of 7 View Attempt 2/21/2008 http://scholar.uh.edu/webct/urw/lc179937921.tp179937934/ViewStudentAttempt.dowebct. ..
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Score: 1/1 4. A 23.8 mass % aqueous solution of iron(III)chloride has a density of 1.280 g/mL. Calculate the molality of the solution. Student Response Value Correct Answer Answer 1.926 100% 1.93 Score: 1/1 5. How many moles of solute particles are present in 4.57 mL of 0.154 M NaNO 3 ? Use scientific notation with 3 significant figures!!!! Student Response Value Correct Answer Answer 1.41E-3 100% 1.41E-3 (1.41 × 10 -3 ) Score: 1/1 6. Which of the following solutions will have the lowest freezing point? Input the appropriate letter. A. 35.0 g of C 2 H 6 O 2 in 250.0 g of ethanol (C 2 H 5 OH) B. 35.0 g of C 3 H 8 O in 250.0 g of ethanol (C 2 H 5 OH) C. 35.0 g of C 4 H 10 O in 250.0 g of ethanol (C 2 H 5 OH) Student Response Value
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chem test - View Attempt Page 1 of 7 View Attempt 1 of 1...

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