Interpretation:
The number of molecules in
Concept introduction:
In 1 mol of any substance, there are

Answer to Problem 2PP
The number of H2O molecules is
Explanation of Solution
Given information:
The number of moles of H2O molecule is 11.5 mol.
The number of moles can be converted into number of units using the following conversion factor:
Thus, in 11.5 mol of H2O, the number of H2O molecules can be calculated as follows:
Putting the values,
Thus, in 11.5 mol of H2O there are
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Chemistry: Matter and Change
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