a 2.75-l container filled with co2 gas at 25°c and 225 kpa pressure springs a leak. when the container is re-sealed, the pressure is 185 kpa and the temperature is 10°c. how many moles of gas were lost?

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.