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% Fe = ____________ x 100%
Mr Hb
56 x n Fe
0,66% = ____________ x 100%
68000
56 x n Fe
0,0066 = _________
68000
0,0066 x 68000 = 56 x n Fe
n Fe = (0,0066 x 68000)/56
n Fe = 8
Jadi, banyaknya atom besi adalah 8