What weight of `CaCO_(3)` must be decomposed to produce the sufficient quantity of carbon dioxide to convert 21.2 kf of `Na_(2)C

What weight of `CaCO_(3)` must be decomposed to produce the sufficient quantity of carbon dioxide to convert 21.2 kf of `Na_(2)CO_(3)` completely in `NaHCO_(3)`. [Atomic mass Na=23, Ca=40]
`CaCO_(3) rightarrow CaO + CO_(2)`
`Na_(2)CO_(3) + CO_(2) + H_(2)O rightarrow 2NaHCO_(3)`
A. 100Kg
B. 20kg
C. 120Kg
D. 30Kg

What weight of `CaCO_(3)` must be decomposed to produce the sufficient quantity of carbon dioxide to convert 21.2 kf of `Na_(2)CO_(3)` completely in `

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