Interpretation: The number of water molecules in a 1.0 L of a bottle of water needs to be determined.
Concept Introduction:
The density is related to mass and volume as follows:
Here, m is mass and V is volume.
Also, the number of moles can be calculated from mass and molar mass as follows:
Here, m is mass and M is molar mass.
Also, according to
Explanation of Solution
The density of water is given 1.00 g/mL. Also, the volume is given 1.0 L; thus, the mass of water can be calculated as follows:
Here, m is mass and V is volume.
Putting the values,
Or,
Therefore, the mass of water is 1000 g.
The molar mass of water is 18 g/mol; thus, the number of moles of water can be calculated as follows:
Substitute the values,
According to
Therefore, the number of water molecules is
Chapter 10 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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