Answer to Question #301455 in General Chemistry for Ivan Ackerman

Question #301455

A sample of aluminum foil contains 7.80×1023 atoms. What is the mass of the foil?

Expert's answer

Molar mass of Al = 27 g/mol

Moles of Al = =7.80×10^23/6.022×10^23

= 1.30 mol

Mass = mole × molar mass

= 1.30 × 27

= [35.0] g

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