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ha123456
2 năm trước
mn ơi giúp em vói ạ . ai nhanh và đúng em hứa cho 5* và ctlhn Bài 1. Hoà tan hoàn toàn hỗn hợp gồm 0,12 mol FeS2 và 0,06 mol Cu2S vào dung dịch HNO3 dư, đun nóng thu được dung dịch X chứa Fe(NO3)3, Cu(NO3)2, H2SO4, HNO3 dư và V lít khí NO là sản phẩm khử duy nhất ở đktc. a. Xác định V. b. Thêm dung dịch Ba(OH)2 dư vào dung dịch X. Tính khối lượng kết tủa thu được
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