# Face the heat

Chemistry Level pending

The minimum radius of drop of water that might evaporate at 0 degree Centigrade without heat being supplied to it is $$x\times 10^{-11}\text{ m}$$, find $$x$$.

Take surface tension as $$120\times 10 ^{-3} \text{ N/m}$$ and $$L_{v}=660 \text{ KCal/kg}, J=4 \text{ J/cal}$$.

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