Determine the chemical formula of this substance ie find x

Question

1. The spectral analysis of a chemical compound gave the following composition on a mass basis: 29.1% Na, 40.5% S, 30.4% O. Determine the chemical formula of this substance (i.e., find x, y, and z in Na_xS_yO_z).

2. How many lbm are in 1 lbmole of

a. C₁₂H₂₂O₁₁ (sucrose, a typical carbohydrate).

b. C₅₇H₁₁0O₆ (stearin, a typical fat).

c. C₃₀₃₂H₄₈₁₆O₈₇₂N₇₈₀S₈Fe₄ (human hemoglobin, a typical protein).