Mass of filter paper: _____ Mass of the empty evaporating dish: _____ Mass of th

Question

Mass of filter paper: _____ Mass of the empty evaporating dish: _____ Mass of the evaporating dish and mixture: _____ Mass of the initial mixture: _____ Separation of Iron Mass of iron and the evaporating dish: _____ Mass of iron collected: _____ Mass of remaining sample and Beaker (1): _____ Separation of Naphthalene Mass of sample and Beaker (1) after sublimation: _____ Mass of naphthalene (by subtraction): _____ Separation of NaCl Mass of Flask (2) and boiling stones: _____ Mass of Flask (2), stones, and dry NaCl: _____ Mass of NaCl: _____ Mass of SiO_2 Mass of SiO_2 and filter paper _____ Mass of SiO_2 _____ Calculation: Percentage of Iron: _____ Percentage of Naphthalene: _____ Percentage of NaCl: _____ Experiment: Separation of Mixtures

Explanation / Answer

Percentage of Iron = mass of iron x 100

                           = 0.283 x 100 = 28.3 %

Percentage of Naphthalene = mass of naphthalene x 100

                                        = 0.004 x 100 = 4 %

Percentage of NaCl = Mass of Nacl x 100

                              = 0.5767 x 100 = 57.67 %

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