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Answer :
Final answer:
To determine how many moles are in 2.16 × 10²â´ atoms of magnesium, we use Avogadro's number (6.02 × 10²³). Dividing the number of atoms by Avogadro's number, we find there are 3.59 moles of magnesium in 2.16 × 10²â´ atoms. Answer is B) 3.59 moles.
Explanation:
To calculate how many moles are in 2.16 × 10²â´ atoms of magnesium, we can use Avogadro's number, which states that one mole of any substance consists of 6.02 × 10²³ entities (atoms, in this case). The formula used is: moles = number of atoms / Avogadro's number.
So, applying that to this question: moles = 2.16 × 10²â´ / 6.02 × 10²³ = 3.59 moles
Therefore, in 2.16 × 10²â´ atoms of magnesium, there are 3.59 moles. So, the correct answer is B) 3.59 moles.
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