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Besoin aide pouvez vou sme dire ci c est bon et je n arrive pas le 2c merçi
2a) m(c6h8o6)=6m(c)+8m(h)+6m(o)
= 6*12+8*1+6*16
= 72+8+96
= 176 g/mol

2b) n= (c6h8o6) quantite de matiere de vitamines (mol)
m=(c6h8o6) masse de vitamine (g)
n(c6h8o6)=m(c6h806)=0.5 0.0028 mol
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m(c6h806) 176

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