Question
Define surface tension.
State its formula and CGS and SI units.
State its formula and CGS and SI units.
✓
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→(i) per mole
(ii) per unit mass
(iii) per molecule of nitrogen at STP. [Molar mass of nitrogen $=28 \times 10^{-3} \mathrm{~kg} / \mathrm{mol}, \mathrm{R}=8.314$
$
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$
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