The number of atoms that would be in a sample of strontium with a volume of 178 cm³ is 3.17×10²⁴ atoms
<h3>What is density? </h3>
The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as
Density = mass / volume
<h3>How to determine the mass of strontium </h3>
- Volume of strontium = 178 cm³
- Density of strontium = 2.60 g/cm³
- Mass of strontium =?
The mass of strontium can be obtained as illustrated below:
Density = mass / volume
Cross multiply
Mass = Density × Volume
Mass of strontium = 2.60 × 178
Mass of strontium = 462.8 g
<h3>How to determine the number of atoms</h3>
The number of atoms in 462.8 g sample of strontium can be obtained as follow:
1.46×10⁻²² g of strontium = 1 atom
Therefore,
462.8 g of strontium = (462.8 g × 1 atom) / 1.46×10⁻²² g
462.8 g of strontium = 3.17×10²⁴ atoms
Thus, 3.17×10²⁴ atoms is present in the sample.
Learn more about density:
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