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  • 15-01-2020
  • Chemistry
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11. Zinc chloride, ZnCl2, is 52.02% chlorine by mass.
a. What mass of chlorine is contained in 80.3 g of ZnCl2?
b. How many moles of Cl is this?

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  • 15-01-2020

Answer:

a. 41.8 g; b. 1.18 mol

Explanation:

1. Mass of Cl

[tex]\text{Mass of Cl} = \text{80.3 g ZnCl}_{2} \times \dfrac{\text{52.02 g Cl}}{\text{100 g ZnCl}_{2}} = \text{41.8 g Cl}[/tex]

2. Moles of Cl

[tex]\text{Moles of Cl} = \text{41.8 g Cl} \times \dfrac{\text{1 mol Cl}}{\text{35.45 g Cl}} = \text{1.18 mol Cl}[/tex]

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