A flask filled to the 25.0 mL mark contained 29.97 g of a concentrated salt-water solution. What is the density of the solution?
Answer (3)
The density of the concentrated salt-water solution is approximately 1.20 g/mL, calculated using the mass of 29.97 g and the volume of 25.0 mL. This indicates that the solution is denser than pure water, which has a density of about 1.00 g/mL. Understanding density is important in chemistry for determining solution concentration.
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To find the density of a solution, we need to use the formula for density, which is:
Density = Volume Mass
In this question:
The mass of the concentrated salt-water solution is given as 29.97 grams.
The volume of the solution is 25.0 milliliters (mL).
Now, we can calculate the density:
Density = 25.0 mL 29.97 g
Performing the division, we get:
Density = 1.1988 g/mL
Therefore, the density of the solution is approximately 1.20 g/mL when rounded to three significant figures, which is a common practice in chemistry for maintaining precision.
Density is a key property in chemistry that helps to identify substances and their concentration levels in solutions. Essentially, it tells us how much mass is contained in a given volume. This understanding is crucial for various applications such as preparing solutions in laboratories and understanding buoyancy.
1.20 m L g ;
