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Answer to Question #56459 in General Chemistry for Swarup patil

Question #56459
Calculate number of moles in
A)7.85gm Fe (molar mass =56 gm/mol)
B)4.68 mg of Si (molar mass =28.1gm/mol)
Expert's answer
n=m/M

A. n = 7.85g / 56g/mol = 0.14 mol

B. n = 0.00468g / 28.1 g/mol = 0.00017

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