on the basis of electronegativity differences between atoms, which of the following scientific claims is the most accurate regarding the bonding in mg(no3)2(s) ?

Compound with sulfer  is bright red 

Answerhund's rule;

Molarity is moles of solute over liters of solution. idk if that is what you are talking about, but you can convert moles of solute to grams of solute using dimensional analyzes by using molar mass found on the periodic table.