- fravitational lensing is: the slowing of time as objects have greater gravity a wrinkle in spacetime due to the mass of large objects the effect of gravity on spacetime the bending of light as it interacts with a source of gravity Rewatch
- Which measuring scale is calibrated in units of 10? A. Metric scale B. Architect's scale C. English scale D. Engineer's scale
- Thinking & Inquiry (4 marks) Do the following calculations carefully. Use the space beneath the multiple-choice answer sheet on the main test page to do your rough work.It will not be marked. 15. Oxygen gas, initially at a pressure of 300.0kPa , is allowed to expand at constant temperature until its volume has increased from 100.0 mL to 225.0 mL. What is the final pressure? a) 133.3 kPa c) 675.0 kPa e) 0.001485 kPa b) 75.00 kPa d) 0.007500kPa 16. Determine the final pressure when a gas contained in a steel cylinder at 95 kPa is heated from 20.0^circ C to 30.0^circ C a) 63 kPa c) 98 kPa e) 6.3 kPa b) 92 kPa d) 140 kPa
- 12. The combined gas law states that pressure and Kelvin temperature of a fixed amount of gas are __ proportional to each, and pressure is __ proportional to the volume of the gas. a) inversely, directly c) directly,exponentially b) inversely, exponentially d) directly inversely 13. Avogadro's Law states that: a) Equal volumes of gases under the same conditions of temperature and pressure contain equal number of molecules b) The size or mass of a particle has no effect on molecules since the distances between the particles are so small c) The molar volume of any gas at STP is 22.4 L d) Pressure is directly proportional to the number of atoms or molecules 14. To find the density of a gas the following equation can be used: a) d=(PV)/(RT) C) d=(PM)/(VnRT) b) d=(RM)/(PT) d) d=(PM)/(RT)
- 8. What Kelvin temperature is equal to 45.00^circ C -208.15K b) 208.15 K C) -318.15 K d) 318.15 K 9. At what temperature does an ideal gas have zero kinetic energy? a) 0^circ C b) -273.15K c) -273.15^circ C d) 27315 K 10. At constant volume , tripling the temperature of a fixed mass of gas will a) triple the pressure d) decrease the pressure by one third b) increase the pressure by 4x e) have no effect on the pressure c) decrease the pressure by 4x 11. Which of the following is NOT acceptable as a form of the ideal gas law? V=nRT/P b) P=nRT/V R=PV/nT d) T=nR/PV
