Calculate the equilibrium concentration of H3O in a 0.20 M solution of oxalic acid. Express your answer to two significant figures and include the appropriate units.

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

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 percent by mass of oxygen in fe2o3