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統計: A(1), B(22), C(1), D(1), E(0) #956045

詳解 (共 1 筆)

#1349442
(A) CaCO3 = 40+12+16×3 = 100
(B) NaHCO3 = 23+1+12+16×3 = 84
(C) CO2 = 12+16×2 = 44
(D) H2SO4 = 1×2+32+16×4 = 98
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