What is difficult about concentration?

Scott, Fraser (2021) What is difficult about concentration? Education in Chemistry. ISSN 0013-1350 (https://edu.rsc.org/education-research/what-is-dif...)

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Fresh insight offers tips for teaching the mathematics of moles, volume and molarity. A group of researchers has provided new insight into students' misconceptions about concentration in a recent study. Previous research has focused on students' ideas about the nature of solutions and the process of dissolution. This study, led by Andrés Raviolo, investigated quantitative aspects.