what is the pressure of kpa of 6.0 moles of gas if its volume is 2.0 liters and its temperature is 80.0 degrees celsius

I would say its hydrogen, as it makes 51% of the cell constituents. This is followed by oxygen, which makes up 24% of the cell, and then carbon which is present as 11% of the total mass. Nitrogen makes up 4% of the cell, followed by other elements like phosphorous.