If 30 grams of NaCl were formed, how many moles of NaClO3 were heated?

What forms when chemical reactions combine pollution with sunlight?

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

Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o          sncl2•4h2o          sncl2•6h2o