Chapter 3.2, Problem 2CP

What is the percent composition by mass of sodium bicarbonate $\left({\text{NaHCO}}_{\text{3}}\right)?$

$\begin{array}{l}\text{a)}\hfill \\ \text{20}\text{.89\% Na, 2}\text{.75\% H}\text{.32}\text{.74\% C, 43}\text{.62\% O}\hfill \\ \text{b)}\hfill \\ \text{44}\text{.20\% Na, 1}\text{.94\% H, 23}\text{.09\% C, 30}\text{.76\% O}\hfill \\ \text{c)}\hfill \\ \text{21}\text{.28\% Na, 0}\text{.93\% H,33}\text{.35\% C,44}\text{.43\% O}\hfill \\ \text{d)}\hfill \\ \text{44}\text{.20\% Na, 1}\text{.94\% H, 23}\text{.09\% C, 30}\text{.76\% O}\hfill \\ \text{e)}\hfill \\ \text{27}\text{.37\% Na, 1}\text{.20\% H, 14}\text{.30\% C, 57}\text{.14\% O}\hfill \end{array}$