The equations given below relate to the manufacture of sodium carbonate (molecular mass of
`NaCl+NH_(3)+CO_(2)+H_(2)O to NaHCO_(3) +NH_(4)Cl`
Na `CO_(3) = 106).`
`2NaHCO_(3) to Na_(2)CO_(3)+H_(2)O+CO_(2)`
Question a and b are based on the production of 21.2 g of sodium carbonate
a. What is the mass of sodium hydrogen carbonate must be heated to give 21.2 g of sodium carbonate (molecular weight of NaHCO_(3) = 84)

Explanation

33.6 g