65. What is [OH-] if the pH is 12.6 (A) 0.004 M (B) 0.04 M (C) 0.4 M (D) 0.0004 M A 0.25M solution of ethanoic acid is found to be 1.30% ionized. Answer the next two questions with the information:
66. What is the pH of the solution? (A) 1,02 (B) 1.28 (C) 12.8 (D) 0.12
67. What is the dissociation constant of the acid? (A) 0.052
(B) 0.198 (C) 0.0136 (D) 0.025​

Need what is special about water as a compound? how does water regulate climate? what drives water evaporation?   why is the water vapor fresh water when it rises from the ocean? why might freshwater in the form of snow take longer to enter the water cycle again than liquid precipitation?   what is an aquifer? what role do people play in the water cycle? plz just answer as many as you can ! thx if you !

The chemical formula for emerald is be3al2(sio3)6.an emerald can be decided as

People who practice which of the following diets may run the risk of not getting enough iron. a. gluten free or vegan diet b. diet for managing diabetes c. vegan diet d. gluten free diet