studentsrepo.um.edu.mystudentsrepo.um.edu.my/2873/4/BAB_1.pdf14 The two elements (metals) that are...
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studentsrepo.um.edu.mystudentsrepo.um.edu.my/2873/4/BAB_1.pdf14 The two elements (metals) that are relevant to the present study are copper and lead. It can be noted that these metals