Which contains more atoms: 1 kg of lead or 1 kg of aluminum?
The atom containing more atoms.
Answer to Problem 64A
1 kg ofaluminium contains more atoms.
Explanation of Solution
Given:
The given elements are,
1 kg lead and 1 kg aluminium.
Formula Used:
From mole concept,
1 mole of any element contains
Calculation:
For lead,
The atomic mass of lead is 207.2
So,
1 mole of lead = 207.2 g
So, number of atoms in 207.2 g of lead is
Therefore, number of atoms in 1 kg of lead will be
Now, for aluminium
The atomic mass of aluminium is around 27
So,
1 mole of aluminium = 27 g
So, number of atoms in 27 g of aluminiumis
Therefore, number of atoms in 1 kg of aluminium will be
So, 1 kg of aluminium contains more atoms.
Conclusion:
Therefore, 1 kg of aluminium contains more atoms.
Chapter 17 Solutions
Conceptual Physics: The High School Physics Program
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