ChemCalc Dump /sym/93428e
id=1 · host=br.gridbatch.net · 2026-10-19 01:02Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∇²ω = 0
∑_{k=1}^{n} k = n(n+1)/2
125K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
AgNO₃ + NaCl → AgCl↓ + NaNO₃
17K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
Fe₂O₃ + 3CO → 2Fe + 3CO₂
311K
∑_{k=1}^{n} k = n(n+1)/2
264K
2H₂ + O₂ → 2H₂O
\frac{8}{6} \sum_{i=1}^{n} i^{2}
39K
det| 7 4 ; 4 8 | = 40
364K