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Const: R=8.31 J/molK; l=28,96.10-3 kg/mol; T=293K; T0=273K;
g=9.81 m/s2; q=998 kg/m3; P0=1,01.105 N/m2;n0=2,69.1025
l=3,28.10-2 m; r=10,3.10-5 m; V=0,5.10-4 m3;P=95990.4 Pa
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