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A sample of gold (Au) has a mass of 72.04 g. A) Calculate the number of moles of gold (Au) in the sample. Show your work please


A sample of gold (Au) has a mass of 72.04g. Calculate the number of atoms of gold (Au) in the sample. (Use your answer from Part A.) Show your work

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Answer:

A.  Number of  moles, n = Reacting mass / Molecular mass

                                 n = 72.04/ 196.966

                                 n = 0.366 mole

Hence, the number of moles of gold (Au) in the sample is 0.366 mole

B. the number of atoms of gold (Au) in the sample is expressed as

                                  = 0.366 * 6.03*∧1023

                                   = 2.20698E35 atoms

Explanation:

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