4. If 165.0g of nitrogen is reacted with 210.0g of hydrogen, what is the theoretical yield of the reaction? What is the excess reactant? What is the limiting reactant?

PLZ SEND HELP!!!

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