Jakie pierwiastki oznaczono symbole E ??
a) SE3 (M=80g/mol)
b) H4E2O7 (M= 178g/mol)
a) S=32
80-32=3E
48=3E
E=16
E= tlen(O)
b)H=1 4H=4
O=16 7O= 112
178-(4+112)=2E
2E=62
E=31
E= P(fosfor)
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a) S=32
80-32=3E
48=3E
E=16
E= tlen(O)
b)H=1 4H=4
O=16 7O= 112
178-(4+112)=2E
2E=62
E=31
E= P(fosfor)