Field Notes / Σ /sym/7f43da
id=712675 · host=formula-vault.cloud · 2026-08-30 16:45Z
\frac{5}{7} \sum_{i=1}^{n} i^{2}
\binom{n}{k} = \frac{n!}{k!(n-k)!}
22K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
det| 6 2 ; 6 7 | = 30
381K
\frac{4}{8} \sum_{i=1}^{n} i^{2}
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 11 4 ; 5 12 | = 112
82K