Which elements would be expected to form a binary compound of the form XY? A- Sodium and sulfur B- magnesium and bromine C- potassium and phosphorous D- aluminum and phosphorus

The answers is bad germs in their

Nonmetals usually react by gaining electrons

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.