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The number of moles in 23.3 g of zinc (atomic mass ≈ 65.4) is approximately _____.
A0.25
B0.53
C0.35
D0.37
Answer & Solution
Correct answer: C. 0.35
1. Moles = mass / atomic mass.
2. Moles = 23.3 / 65.4.
3. = 0.356 ≈ 0.35.
_Source: RRB Group D CEN-02/2018 PYQ, Q.17._