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nguyenvietdruni
2 năm trước
Bài 1. Khí A có công thức hóa học XY2. Trong 1 phân tử XY2 có tổng số hạt là 69, tổng số hạt mang điện nhiều hơn số hạt không mang điện là 23. Số hạt mang điện trong nguyên tử X ít hơn số hạt mang điện trong nguyên tử Y là 2. a) Xác định công thức hóa học của A và gọi tên chất A. b) Tính số hạt mang điện có trong 1,5 mol chất A. làm nhanh giúp mình nhé
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