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Lokane
@Lokane
April 2019
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Salut, j'ai besoin d'aide pour mes devoirs. Mon devoir est dans les pièces jointes. C'est l'exercice 2 et 3 svp merci d'avance :D
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eivmam
1) M=2*12,0+6*1,0+16,0=46,0g/mol
ro=m/V et n=m/M donc ro=nM/V donc n=ro*V/M n=0,79*500/46,0
2) C=n/V=m/(MV)
C=0,045/((23,0+35,5)*0,005)
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ro=m/V et n=m/M donc ro=nM/V donc n=ro*V/M n=0,79*500/46,0
2) C=n/V=m/(MV)
C=0,045/((23,0+35,5)*0,005)