A Risk of Water Flasks
As summer approaches, we will need to receive hydration frequently. At such a time, a water flask is useful because
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Learning English and Japanese
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Chemistry
The temperature that water density become maximum.
Generally, solid has higher density than liquid, but water is different. 一般的に固体は液体よりも密度が高いですが、水の場合は違います。 The temperature that water density become maximum is
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