The volume of the sample is 3.96cm³
Calcium chloride is an anhydrous salt that has the ability to form moisture faster than most compounds.
Therefore, it is used as de-icer on roads in winter.
To calculate the volume of the sample of calcium chloride used, the formula for density is used.
Which is,
Density = mass / volume
But, Density = 2.50g/cm³
mass = 9.91 g
∴ volume = mass / density ( here, volume is made the subject of formula)
= 9.91 / 2.50
= 3.96cm³
Therefore, the volume of the mass of sample given is 3.96cm³
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