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11-11-2018
Chemistry

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How many moles are 1.20 x 1025 formula units of calcium iodide?

Respuesta :

11-11-2018

Answer:

19.9 mol

Explanation:

Use Avogadro’s number to convert formula units of CaI₂ to moles of CaI₂.

1 mol CaI₂ ≡ 6.022 × 10²³ formula units CaI₂

Moles of CaI₂ = 1.20 × 10²⁵ × (1 /6.022 × 10²³)

Moles of CaI₂ = 19.9 mol

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