s 7, 9 and 10. Don't forget to write the Letter for the Correct answer. Choices are given below each question. Thanks!

Question 7 (1 point) Calculate the volume at STP for 4.000 L balloon filled with oxygen at 2.000 atm and 25.00 C. This is a change in conditions problem, we need to define the variables: V1 = 4.000 L T1 = _1__K P1 = 2.000 atm V2 = ? L T2 = _ 2_ K P2 = 1.000 atm The problem doesn't mention the moles, n, thus the amount of moles was not changed and n1 = _3_ The equation simplifies to P2 V2 P1 V1 P2 V2 P1 V1 P1 V1 4_ solving for V2 = --- n2 T2 01 1 T2 T1 T1 5__ 6__atm _7_ _L _8__K putting in the numbers V2= - = 7.329 L 9_K _10__ atm A. n2 B. 20.0 C. 473.15 D. 323.15 E. 1.000 F. P1 G. P2 H. V1 1. V2 J. n1 K. T1 L. T2 M. 1.464 N. 0.08205 L atm/mol K O. 0.7543 P. 0.3270 Q. 12.6 R. 0.333 S. 3.000 T. 0.667 U. 99.38 V. 298.15 W. 2.000 X. 6.000 Y. 4.000 Z. 1.333 AA. 0.3270 BB. 7.329 CC. 22.414 DD. 32.00 EE. 10.46 FF. 1.428 GG. 273.15 HH. 25.00 Question 9 (1 point) Calculate the density of oxygen at STP using the volume from problem 7 (7.329 L) and the mass from problem 8 (10.46 g) mass 1_g D = - = _2_ g/L volume 3 L A. 1.000 B. 273.15 C. 7.329 D. 22.414 E. 0.08205 L atm/mol K F. 10.46 G. 1.428 H. 32.00 1. 4.000 J. 6.000 K. 2.000 L. 1.000 M. 298.15 Question 10 (1 point) Calculate the density of oxygen at STP using the molar volume (22.414 1/mol) and the molar mass. mass _1__g D = -- _2__ g/L volume 3__L A. 1.000 B. 273.15 C. 7.329 D. 22.414 E. 0.08205 L atm/mol K F. 10.46 G. 1.428 H. 32.00 1. 4.000 J. 6.000 K. 2.000 L. 1.000 M. 298.15 A/