How many moles of P I₃ contain 2.55 × 10²⁴ iodine atoms? A) 1.41moles P I₃ B) 4.23 moles P I₃ C) 12.7moles P I₃ D) 7.87 moles P I₃ E) 2.82moles P I₃

Question

Quizplus · Accepted Answer

1 mole of P I₃ contains 3 moles of iodine atoms. So, 2.55 × 10²⁴ iodine atoms are present in 2.55 × 10²⁴ / 3 = 8.5 × 10²³ moles of P I₃. Converting to moles gives 8.5 × 10²³ moles / 1 mole/6.022 × 10²³ = 1.41 moles P I₃.

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