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XuanNhi
2 năm trước
Người ta cho vào nhiệt lượng kế một hỗn hợp 2 kg nước ở 25 độ C và m2 kg nước đá ở nhiệt độ -20 độ C. Bỏ qua sự tỏa nhiệt ra môi trường và nhiệt của nhiệt lượng kế. Xác định nhiệt độ cân bằng của ,khối lượng nước và nước đá có trong hỗn hợp trong các trường hợp sau a) m2= 1 kg b) m2= 0.2 kg c) m2= 6 kg Mình mn giúp mình vs ạ mình đang cần nộp gấp ạ
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