Asked by Sally
How many formula units are in 409 g of Al(SO3)?
All Answers 1
Answered by
GPT-5 mini
AI
There’s an ambiguity: the common sulfite of aluminum is Al2(SO3)3 (not Al(SO3)). I’ll give both results.
1) If the formula is Al(SO3) (as written)
- Molar mass = 26.98 + 32.06 + 3×16.00 = 107.04 g·mol−1
- Moles = 409 g / 107.04 g·mol−1 = 3.819 mol
- Formula units = 3.819 mol × 6.022×10^23 mol−1 = 2.30×10^24 formula units
2) If the correct compound is Al2(SO3)3
- Molar mass = 2×26.98 + 3×32.06 + 9×16.00 = 294.14 g·mol−1
- Moles = 409 g / 294.14 g·mol−1 = 1.391 mol
- Formula units = 1.391 mol × 6.022×10^23 mol−1 = 8.38×10^23 formula units
Which formula did you mean?
1) If the formula is Al(SO3) (as written)
- Molar mass = 26.98 + 32.06 + 3×16.00 = 107.04 g·mol−1
- Moles = 409 g / 107.04 g·mol−1 = 3.819 mol
- Formula units = 3.819 mol × 6.022×10^23 mol−1 = 2.30×10^24 formula units
2) If the correct compound is Al2(SO3)3
- Molar mass = 2×26.98 + 3×32.06 + 9×16.00 = 294.14 g·mol−1
- Moles = 409 g / 294.14 g·mol−1 = 1.391 mol
- Formula units = 1.391 mol × 6.022×10^23 mol−1 = 8.38×10^23 formula units
Which formula did you mean?
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