STPM Chemistry 962 Practice Questions - Sijil Tinggi Persekolahan Malaysia (STPM) - Chemistry Kimia (962) Exam

How many atoms are present in 0.25 mol of helium gas? [L = 6.02 × 10^23 mol^-1]

1.505 × 10^23 2.408 × 10^23 6.02 × 10^23 2.408 × 10^24

Correct Answer:

1.505 × 10^23

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