Q. The number of oxygen atoms in 0.1 mole of Na₂CO₃·10H₂O is:
Na₂CO₃·10H₂O के 0.1 मोल में ऑक्सीजन परमाणुओं की संख्या है:
Explanation
Given: 0.1 mole of Na₂CO₃·10H₂O
Counting oxygen atoms per formula unit:
From CO₃²⁻: 3 oxygen atoms
From 10H₂O: 10 oxygen atoms
Total oxygen atoms per formula unit = 3 + 10 = 13
Calculation:
Number of formula units = 0.1 mol × 6.022 × 10²³ = 6.022 × 10²²
Total oxygen atoms = 6.022 × 10²² × 13 = 1.806 × 10²³
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