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heomoon


Hoa tan hoan toan mot luong Fe vao 200g dd HNO3 63% dun nog dc khi N02 (san pham khu duy nhat) Trong dd sau pu , nog do HNO3 la 36,92%. V N02 = bao nhiu 9 ( do o 27do C, 1,12atm)
Cho 16g hh Fe, Zn Cu td voi õi trhu dc 19,2g ran Y. Hoa tan Y trong dd h2s04dac nog du thay thoat ra Vl khi s02 (san pham khu duy nhat). Co can dd dc 49,6g hh muoi khan. Gia tri Cua V
Cho 16g hh Fe, Zn Cu td voi õi trhu dc 19,2g ran Y. Hoa tan Y trong dd h2s04dac nog du thay thoat ra Vl khi s02 (san pham khu duy nhat). Co can dd dc 49,6g hh muoi khan. Gia tri Cua V
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