Which one of the following can behave either as a br∅nsted-lowry acid or a br∅nsted-lowry base in an aqueous solution reaction?
(a) nh3
(b) hi
(c) h3po4
(d) hso3-

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

Amass of 100.0 g of solute is dissolved in water so that 850. ml of a 0.7500 m solution has been prepared. what is the molar mass of the solute?

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