How is graphite different from other allotropes of carbon?

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

What is the mass of 0.46 mol of mgcl2

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.