Q. 394.0( 4 Votes )

A gold sample con

Answer :

In the given sample, gold (Au) is 90%.

Thus, One gram of gold sample will contain =


The molar weight of gold = 197g/mole


The number of moles of gold (Au) =


We know, 1mole = 6.022 x 1023


0.0046 mole of gold will contain = 0.0046 × 6.022 ×1023


= 2.77 ×1021 atoms of gold particle


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