How many atom in 5 moles of nitrogen

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone,due to its high light availability and warm water temperature