During a stoichiometric calculation, 0.5 mole of oxygen molecules contains

A. 3.01 × 10²³ molecules

✓

B. 6.02 × 10²³ molecules

C. 1.20 × 10²⁴ molecules

D. 1.50 × 10²³ molecules

📝 Explanation

One mole contains 6.02 × 10²³ molecules. Therefore, 0.5 mole contains half of this number, 3.01 × 10²³ molecules. Concept tested: Avogadro's number.

📖 Additional Information

3.01 × 10²³ molecules
6.02 × 10²³ molecules
1.20 × 10²⁴ molecules
1.50 × 10²³ molecules

One mole contains 6.02 × 10²³ molecules. Therefore, 0.5 mole contains half of this number, 3.01 × 10²³ molecules. Concept tested: Avogadro's number.

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