{
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    "excerpt": "\"Chemical accuracy\" in computational chemistry, is commonly understood to be $1~\\mathrm{kcal\\over mol}$, or about $4~\\mathrm{kJ\\over mol}$. Spectroscopic accuracy is $1~\\mathrm{kJ\\over mol}$, and t...",
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    "title": "Why is chemical accuracy defined as 1 kcal/mol?",
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