Reaction Log /sym/649cc0
id=1 · host=co.gridbatch.net · 2026-10-19 18:50Z
\frac{11}{7} \sum_{i=1}^{n} i^{2}
\binom{n}{k} = \frac{n!}{k!(n-k)!}
43K
ΔS ≥ 0
AgNO₃ + NaCl → AgCl↓ + NaNO₃
98K
det| 8 3 ; 0 9 | = 72
Fe₂O₃ + 3CO → 2Fe + 3CO₂
\binom{n}{k} = \frac{n!}{k!(n-k)!}
45K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
74K
∑_{k=1}^{n} k = n(n+1)/2