PLEASE HELP. I KNOW THAT NO ONE WILL REALLY HELP BECAUSE THIS IS BIG BUT I STILL AM FAILING PLEASE THIS IS ALL MY POINT YOU ARE MY LAST HOPE

Agas diffuses 1/7 times faster than hydrogen gas (h2). what is the molar mass of the gas? 100.10 g/mol 98.78 g/mol 86.68 g/mol 79.98 g/mol

1. list three scientific reasons cockroaches may fly.

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