October 2018 2 50 Report
2kg es bersuhu -5°c dipanaskan sampai suhunya 50°c sehingga mencair semua. Jika kalor jenis es 2100j/kg°c , kalor jenis 4200j/kg°c dan kalor lebur es 340.000j/kg , banyaknya kalor yang diperlukan adalah..... KJ ?
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