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प्रश्न
Calculate the molecular weight of Na2CO3.
[At. wts. are O = 16, Na = 23, C = 12]
संख्यात्मक
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उत्तर
Molecular weight = 2 × (At. wt. of Na) + (At. wt. of C) + 3 × (At. wt. of O)
= 2 × 23 + 12 + 3 × 16
= 46 + 12 + 48
= 106 amu
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