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✨ Best Answer ✨

蒸発熱2.3×10^3J/g
とは1g蒸発するのに2.3×10^3J必要ですよと言う意味
なので30gは
2.3×10^3×30=6.9×10^4J

こだぅか

ありがとうございます😊

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