February 2019 1 23 Report
Tolong dijawab segera mau dikumpul.,,,,,,,,,,

Sebuah pisau mempunyai panjang 20 cm dan lebar 33cm telah berkarat setebal 1,2 cm. hitung massa karat (Fe₂O₃) pada:
1. Keadaan STP
2. tekanan 27 cmHg, suhu 67°C. (Ar: Fe=56,O=16)
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