Question

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4.determinati masa molara pentruurmatoarele substante:

a)Hidroxid de aluminiu………………b)sulfat de aluminiu

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Answer 1

a) Al(OH)

M= 27×1+16×3+1×3=27+48+3=78 g/mol

b)AlSO4

M=27×1+32×1+16×4=27+32+64=59+64=123 g/mol