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Here is the link to a great video that explains your question nicely, hope this helps.
Answer:
I think it's B " Constraints are more important than criteria ".
1) is chemical Bonds
3) Conservation of mass
5) compound
hope i helped on the ones i could answer
Given the mass of 
=25.6 g
The molar mass of =390.35g/mol
Converting mass of to moles:
Converting mol to mol S:
Converting mol S to atoms of S using Avogadro's number:
1 mol = 
