Question

4) Which of the following statements is TRUE? A) All orbitals except 1s have regions of opposite phase. B) All orbitals in a given atom are roughly the same size. C All orbitals contain one or more nodes. D) Since electrons have mass, we must always consider them to have only particle properties E) We can sometimes know the exact location and speed of an electron at the same time. F) All of the above are true. 5) Use the van der Waals equation of state to calculate the pressure of 1.00 mole of a real gas at 30.0 °C in a volume of 22.7 L. Use the following van der Waals coefficients: a 8.33 atm L2 mol-2; b 0.0466 L mol-1. 1.10 bar A) 0.731 bar B) 1.13 bar C) 0.933 bar D). 0.746 bar E) 0.831 bar F) 6) Which of the following gases behaves closest to an ideal gas? A) H2 B) F2 C) N2 D) Xe E) 12 F) Cl2

Answer 1

Question 4. Option A

Question 5. 1.10 bar

Explanation: P = RT/(V-b) - a/V² = 0.0821*303/(22.7-0.0466) - 8.33/22.7² = 1.082 atm = 1.10 bar (1 atm = 1.01325 bar)

Question 6. Xe

Explanation: Xe is the monoatomic noble gas/inert gas, which will behave closest to an ideal gas.