A molecule of an element is called what?​

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory

The following transition occurs at a molecular level for a substance. what transition corresponds to this change in microscopic structure? the carbon dioxide molecules on the left are in a regular, tightly packed pattern. after heating, it becomes much lower density. a. melting b. boiling c. sublimation d. freezing

How many moles of na2s2o3 are needed to react with 0.12mol of cl2? show work.