ong noi loc
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Như chúng ta đã biết công thức phân tử của CuSO4 ngậm nước là CuSO[SUB]4[/SUB].5H[SUB]2[/SUB]O nhưng nếu viết chính xác hơn là:
A/ [Cu[SUP]2+[/SUP].2H[SUB]2[/SUB]O][3H[SUB]2[/SUB]O.SO[SUB]4[/SUB][SUP]2-][/SUP]
B/ [ Cu[SUP]2+[/SUP].3H[SUB]2[/SUB]O][2H[SUB]2[/SUB]O.SO[SUB]4[/SUB][SUP]2-][/SUP]
C/[ Cu[SUP]2+[/SUP].4H[SUB]2[/SUB]O][H[SUB]2[/SUB]O.SO[SUB]4[/SUB][SUP]2-][/SUP]
D/ [Cu[SUP]2+[/SUP].H[SUB]2[/SUB]O][4H[SUB]2[/SUB]O.SO[SUB]4[/SUB][SUP]2-][/SUP]
A/ [Cu[SUP]2+[/SUP].2H[SUB]2[/SUB]O][3H[SUB]2[/SUB]O.SO[SUB]4[/SUB][SUP]2-][/SUP]
B/ [ Cu[SUP]2+[/SUP].3H[SUB]2[/SUB]O][2H[SUB]2[/SUB]O.SO[SUB]4[/SUB][SUP]2-][/SUP]
C/[ Cu[SUP]2+[/SUP].4H[SUB]2[/SUB]O][H[SUB]2[/SUB]O.SO[SUB]4[/SUB][SUP]2-][/SUP]
D/ [Cu[SUP]2+[/SUP].H[SUB]2[/SUB]O][4H[SUB]2[/SUB]O.SO[SUB]4[/SUB][SUP]2-][/SUP]