A 35.3g of element M is reacted with nitrogen to produce 43.5g of compound M3N2.what is (i) the molar mass of the element (ii) Name. of the element

True, the standard unit for volume is liters which can be represented by either a lower case "l" or a capital "l"

The answer to your question would be c. mineral oil  

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.