How is the size of the mineral grains affected by the rate at which molten rock material cools?

Si una estrella no tiene paralaje medible, ¿qué puedes inferir?

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

How many moles of al3+ ions are in 1.25 moles of al2o3