Question #137840

how many particles are in 2.66 of cu atoms?


Expert's answer

 mass of cu atoms = 2.66 g .


moles of cu atoms = 2.66 / 63.5 = 0.04188 mol .


number of atoms = moles of cu atom * 6.02 * 10^23 = 0.0418 * 6.02 * 1023 .


= 0.2516 * 10^23 .


=


2.5 * 10^22 atoms .


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