1. How many moles of sodium iodide (Nal) are produced when 43 grams of sodium react with iodine?
2Na(s) + 12 (9)→ 2Nal (s)

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

Chemistry worksheet - i am not sure what they are asking for exactly?

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