Solution:
The formula masses of Na, H, C, and O are 22.99 amu, 1.008 amu, 12.01 amu, and 16.00 amu, respectively.
Since sodium bicarbonate consists of 1 Na atom, 1 H atom, 1 C atom, and 3 O atoms, the formula mass of sodium bicarbonate can be written as
formula mass = (22.99 amu × 1) + (1.008 amu × 1) + (12.01 amu × 1) + (16.00 amu × 3)
[tex]\boxed{\text{formula mass = 84.01 amu}}\\[/tex]
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