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Loan298
2 năm trước
Nung nóng 16g CuO trong ống nghiệm rồi dẫn một luồng khí hidro đi qua ống. Sau phản ứng trong ống còn lại 13,6g chất rắn A. Tính số ngtu có trong 13,6g chất rắn A
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