Trania T.

asked • 02/28/21

A zinc chloride B. copper sulfide

A.

Mass of evaporating dish and zinc: 53.39

mass of evaporating dish: 52.91

mass of zinc: 0.48

mass of evaporating dish and zinc chloride:

mass of zinc chloride:

mass of chloride and zinc chloride:

Empirical formula for zinc chloride:

balance chemical equations for the formation of zinc chloride from zinc HCI:

B.

Mass of crucible, cover, and copper: 35.58

mass of the crucible and cover: 34.03

mass of copper: 1.55

mass of crucible, cover, and copper sulfide:

mass of copper sulfide:

mass of sulfur in copper sulfide:

Empirical formula for copper sulfide :

balance chemical equations for the formation of copper sulfide from copper and sulfur:

Robert S.

tutor
Hello, Trania, The masses of the resulting compounds (Zinc chloride and copper sulfide) are needed to determine their empirical formulas. Zinc sulfide will be ZnCl, but copper sulfide's formula will depend on copper's oxidation state.
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02/28/21

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