The correct answer about density is 2.91 g/mL.
What is Density?
- The measure of how densely a substance is packed together is called density.
- In simple terms, we can say that density is mass per unit volume.
- It can be denoted by the symbols 'D' or 'ρ'.
- The formula of Density is ρ = m/V, where ρ is the density, m is the mass of the object and V is the volume of the object.
- The SI unit Density is Kg/m³
- We can use g/cm³ for solids, g/ml for liquids, and g/L for gases for our convenience.
What are the Applications of Density?
- You may use separation procedures with the assistance of knowledge of the densities of two substances.
- For example, Oil leaks from an oil tank into the ocean, where the less dense oil drops begin to float on the sea.
- Another typical application of density is determining whether an object will float on water or not. Due of the disparity in densities, ships float and submarines dive.
How to solve this question?
Density = Mass / Volume
Density = 58.2 g / 20 mL
Density = 2.91 g/mL
Thus, we can conclude that by dividing mass of the object by volume of the object, we will find the density of the object.
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