Which answer would score higher? Not sure where to start? Explain this Answer A Weigh an evaporating basin, add 50 cm³ of filtered river water and heat until dry. Cool, weigh, reheat, then repeat the cool–weigh cycle until the mass is unchanged; subtract the basin mass. Answer B Weigh an evaporating basin, add 50 cm³ of filtered river water and heat for five minutes. Weigh it while still hot only once, then subtract the basin mass.