These rocks form from volcanic activity

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

Which buffer would be better able to hold a steady ph on the addition of strong acid, buffer 1 or buffer 2? explain. buffer 1: a solution containing 0.10 m nh4cl and 1 m nh3. buffer 2: a solution containing 1 m nh4cl and 0.10 m nh3

How does the presence of oxygen affect the chemical pathways used to extract energy from glucose?