One liter of a certain gas has a mass of 1.25 g at stp. the mass of one mole of this gas is?

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

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)

Why is the melting of ice a physical change ?