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Calculate the number of moles in 42 grams of NaHCO3?

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Calculate the number of moles in 42 grams of NaHCO3?

(a) 0.5

(b) 1

(c) 1.5

(d) 2
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Correct choice is (a) 0.5

For explanation: Molecular weight of NaHCO3 = 84 grams, => number of moles = 42/84 = 0.5.
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