How many magnesium atoms in MgC12?

What is needed by the Calvin Cycle? In a titration what two things are always equal to each other at the endpoint? What does the what does the dots on the endoplasmic reticulum represents? Who made twin stars lab escape? Is streptococcus hytrotrophic? Is xylem and phloem an non - vascular plant? What stars make up our solar system? Are acids more dangerous when diluted than concentrated? What do you call a specialist in nerves? Which blood group is the universal donor O or O-? Cnidarians digest their food? What is the smallest unit of compound? Are swamp hens herbivores or omnivores? What is the part of a plant which regulates its water content? What is the SI unit of measurement scale? How many liters of a 0.250 M BaCl2 solution are needed to react with 0.0325 L of a 0.160 M Na2SO4 solution? How many servings in a 14 ounce can of cranberry sauce? What is the duration and capacity of Sensory Memory? Why is the water from the cold faucet brown and rusty? What is the population of new haven?