In a solution the hydroxide ion concentration is 1 ✕ 10-12 M. What is the pH of the solution? What is the pOH of the solution?
The above solution is

What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?

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

The identities of substances are the same before and after which type of change