Help please. its over dilutions in chemistry

Acylinder is filled with 2.00 moles of nitrogen, 3.00 moles of argon and 5.00 moles of helium. if the gas mixture is at stp, what is the partial pressure of the argon

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

What three things determine the shape and size of a puddle when water is poured out onto a surface