Question

Determine the molar mass for the following molecules/compounds


NaCl H2O O2Zr

58.44 g·mol⁻¹ 18.015 g·mol⁻¹ 123.22 g·mol⁻¹


Fe2O3 Na2O Cl2

159.69 g·mol⁻¹ 61.98 g·mol⁻¹ 70.90 g·mol⁻¹



NaBr PbSO4 Ca(OH)2





Na3PO4 (NH4)2CO3 C6H12O6



Fe3(PO4)2 AgF (NH4)2S







U2 Rb Xe3Ra2 Sg2Po





CaSH NaBrO LiON

Answer 1

Here are molar masses (g·mol⁻¹) for each formula. I used common atomic weights (H 1.008, C 12.011, N 14.007, O 15.999, Na 22.990, Mg … etc.) and rounded to two decimal places. For species containing very heavy or synthetic elements (Sg, Ra, etc.) values are approximate and isotope-dependent.

- NaCl: 58.44 g·mol⁻¹
- H2O: 18.02 g·mol⁻¹ (18.015 g·mol⁻¹)
- ZrO2 (written O2Zr): 123.22 g·mol⁻¹

- Fe2O3: 159.69 g·mol⁻¹
- Na2O: 61.98 g·mol⁻¹
- Cl2: 70.90 g·mol⁻¹

- NaBr: 102.89 g·mol⁻¹
- PbSO4: 303.26 g·mol⁻¹
- Ca(OH)2: 74.09 g·mol⁻¹

- Na3PO4: 163.94 g·mol⁻¹
- (NH4)2CO3: 96.09 g·mol⁻¹
- C6H12O6: 180.16 g·mol⁻¹

- Fe3(PO4)2: 357.48 g·mol⁻¹
- AgF: 126.87 g·mol⁻¹
- (NH4)2S: 68.14 g·mol⁻¹

- U2: 476.06 g·mol⁻¹ (2 × 238.03) — diatomic uranium (approx.)
- Rb: 85.47 g·mol⁻¹

- Xe3Ra2: 845.93 g·mol⁻¹ (3×131.29 + 2×226.03) — hypothetical/approx.
- Sg2Po: ≈747.00 g·mol⁻¹ (2×~269 + ~209) — highly approximate (synthetic elements)

- CaSH: 73.15 g·mol⁻¹ (Ca + S + H) — formula uncommon
- NaBrO: 118.89 g·mol⁻¹
- LiON: 36.95 g·mol⁻¹

If you want the calculation steps for any specific formula (showing each element × count), or if you prefer more precise atomic weights for certain elements, tell me which ones and I’ll show the work.