Question

Q1. One and a half moles of an ideal monoatomic gas expand adiabatically, performing 7000 J of work in the process. What is the change in temperature of the gas during this expansion? [5 Marks) Q2. Answer the following: a. If you scuff electrons onto your shoes while walking across a rug, are you negatively or positively charged? Name one example where aluminium plates are used in shoes to prevent the built up of statie electricity. Why can it be dangerous? (5 Marks] Q3. a. Explain why the temperature of a gas increases when it is compressed and decreases when it expands using conservation of energy [4 Marks] Page 5 of 19 Examination Paper Cover Sheet CRICOS Provider No: 00124

Answer 1

© wolkdone in adiabatic process 8 = 55 = 1.67 Y i-ge W11-7) 7000[1-1.67) 1975-7, = "hte 75 (8-314) A7 V =-376K in your rubber- & ploptic soled phoen drag across the rug, they pick up electrons from the aug in the same way you change a rubber of Plastic rod by rubbing it with a cloth, 1 You have more electrons after you scuff your shoes, so you are negatively charged.