Question

How many atoms of silver are present in a 75 grams pure sample?

Answer 1

Answer:

Calculate the moles of silver (Ag) in 75 gram.

Moles(n) = mass (m) / molar mass (M).

m(Ag) = 75 gram ( Ag ),

M(ag) = atomic weight on the periodic table in gram/mol (Ag),

n(ag) =75 gram (Ag) / 107. 868 gram (Ag) / mol ,

(Ag) = 0.0.69529 mol (ag).

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