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19.現欲在一絕熱杯內,利用0°C的冰和加熱剛達100°C的沸水混合,調製出20°C 450克的水,若分別取用x克的冰和y克的沸水,則 之值為若干?(冰的熔化熱80卡/克) (A) (B) (C)
問題詳情
19.現欲在一絕熱杯內,利用0°C的冰和加熱剛達100°C的沸水混合,調製出20°C 450克的水,若分別取用x克的冰和y克的沸水,則
之值為若干?(冰的熔化熱80卡/克)
(A)
(B)
(C)
(D)
(E)
。
參考答案
答案:[無官方正解]
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
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