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phongdangk2
2 năm trước
Cho A là 1 loại phân đạm chứa 6,67%H,46,66%N còn lại là cacbon và oxi.đốt cháy 1,8g A thu dc 0,672 lít CO2 ở dktc.Xác định cthh A bt rằng kl N2 có trong 1 mol <Kl N2 có trong 100g NH4NO3
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