What mass of hydrogen is produced from 0.02 g of Mg when it reacts with HCl?

What is the study of how matter and energy interact? a. biology b. physics c. planetary science d. chemistry

Sugar is dissolved in water. which is the solute? sugar neither both water

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