(1) Phosphorus silicon is a semi-conductor

What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?

What is the molar mass of potassium nitrate, kno3

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange