Why would it be hard to find the average co2 level if the light intensity were low

Volume is a measurement of how fast particles of a substance are moving

How does a sample of helium at 15 degree celsius compare to a sample of helium at 215 k? a) the helium at 15 degrees celsius has a higher average kinetic energy that the sample at 215 k. b) the helium at 15 degrees celsius has lower nuclear energy that the sample at 215 k. c) the helium at 15 degrees celsius has slower- moving atoms that the sample at 215 k. d) the helium at 15 degrees celsius has smaller atoms than the sample at 215 k.

How many moles of sulfur dioxide are in 2.26 × 10^33 sulfur dioxide molecules?