q2w.122 - (At. no.: H = 1, B = 5, C = 6, N = 7, F = 9, Al =...

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Dr. Zellmer Chemistry 122 Wednesday 9:30 AM Time: 20 mins Summer Quarter 2008 July 2, 2008 Quiz II Name Rec. Instr. ---------------------------------------------------------------------------------------------------------------------------------------- Show ALL your work to receive full credit. R = 0.08206 L C atm/mol C K = 8.314 J/mol C K 1. (6 pts) At what temperature would CO molecules have a rate of effusion equal to that of CH 4 molecules at 40.0°C. (Mol. Wts.: CO = 28.01, CH 4 = 16.04) 2. (5 pts) Write the staright-line form of the Clausius-Clapeyron equation. Explain what is plotted on the x and y axes and how you obtain ) H from the plot. OVER . ..
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3. (10 pts) Examine the following compounds and then answer the questions below which refer to these compounds, as pure substances. ( Give a short explanation for your choices , i.e, types of attractive forces, whether polar or nonpolar.)
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Unformatted text preview: (At. no.: H = 1, B = 5, C = 6, N = 7, F = 9, Al = 13, Si=14, P = 15, S = 16, Cl = 17) (Group no.: H = 1A, B,Al = 3A, C,Si = 4A, N,P = 5A, O,S = 6A, F,Cl,Br,I = 7A) (At. Wts.: H = 1.01, B = 10.81, C = 12.01, N = 14.01, O = 16.00, F = 19.00, Al = 26.98, Si = 28.09, P = 30.97, S = 32.07, Cl = 35.45) .. .. C 3 H 8 CH 3 CH 2- O - H CH 3- O - CH 3 SiH 4 CH 3 F .. .. a) Which compound(s) has(have) only London forces ? b) Which compound(s) has(have) dipole-dipole forces? c) Which compound(s) can form H-bonds between molecules (as a pure substance)? d) Which compound should have the highest boiling point? 4. (4 pts) Under what conditions will a real gas behave more ideally? Explain your answer using the van der Waals equation (show the eqn)....
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q2w.122 - (At. no.: H = 1, B = 5, C = 6, N = 7, F = 9, Al =...

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