37. It takes 42 min for the concentration of a reactant in a first-order reaction to drop from 0.45M to 0.32M at 25°C. How long will it take
for the reaction to be 90% complete?

Which of the following ocean acidification? are the most likely side effects of a ph less than 7.0 in the ocean b. more metal salts altering the ocean chemistry c. dissolution of the shells of marine organisms d. both a & b e. all of the above.

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 does the mass of 0.7891 mol of ferric oxide (fe2o3)