Why is carbon monoxide not an element?

Asample of freon gas has a volume of 2.23 liters, a pressure of 4.85 kpa, and a temperature of -1.36°c. calculate the volume at a pressure of 1.38 kpa and a temperature of 5.5°c. (show work)

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released