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Calculeaza masa moleculara a sulfurii de aluminiu (Al2S3) *



150 g/mol

118 g/mol

120 g/mol​


Răspuns :

A Al = 27

A S = 32

M Al2S3 = 2 × 27 + 3 × 32 = 54 + 96 = 150 g/mol