
Concept explainers
Interpretation:
From the samples of 50 g of copper and 50 g of gold, the one that has more atoms needs to be deduced.
Concept Introduction:
Mass is a fundamental property of an object which is representative of the amount of matter present in that object.
The average mass of an atom is expressed in terms of

Answer to Problem 10E
The sample with 50 g copper will have more atoms.
Explanation of Solution
Given:
Mass of copper = 50 g
Mass of gold = 50 g
Calculation:
Calculateatoms of copper in the 50 g sample as follows:
As per the periodic table, the atomic mass of an atom of copperis 63.5 amu
Based on the conversion expressed in equation (1):
Now,
Calculate atoms of gold in the 50 g sample as follows:
As per the periodic table, the atomic mass of an atom of gold (Au) is 196.97 amu
Based on the conversion expressed in equation (1):
Now,
Thus, the sample weighing 50 g of copper will have more atoms.
Chapter U4 Solutions
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