What is the potential energy of the reactants from the following energy diagram?

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

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.

Asap what is the temperature when the volume is 700 ml? a 500 k b 200 k c 600 k d 700 k