Write the chemical formulas of the following substances: a) baking soda,

Write the chemical formulas of the following substances:
a) baking soda,
b) soda ash,
c) crystalline soda.
Solutions of which two of these substances are the same?

a) NaHCO3
b) Na2CO3
c) Na2CO3 * l0H2O
A solution of soda ash and crystalline soda are one and the same.

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