Question

What is the mass of 8 moles of carbon-12?

Answer 1

if Mass = moles  ×  molar mass

then Mass of Carbon = Moles of Carbon  ×  Molar Mass of Carbon
                                 
                                  =  8 mol  ×  12 g/mol

                                  = 96 g

∴ the mass of 8 moles of carbon-12 is   96 g