Exam Q: Mixed Liquids Density?

In summary, the density of mixed liquids is defined as the mass of the mixture divided by the volume of the mixture. It can be calculated by adding the mass of each liquid and dividing by the total volume. Knowing the density of mixed liquids is important for determining concentration, predicting behavior, and understanding physical properties. It can change over time due to factors like temperature and chemical reactions. In a laboratory setting, it can be measured using tools such as a hydrometer, pycnometer, or by calculating the mass and volume of the mixture.
  • #1
O.J.
199
0
exam question...

Equal masses of two liquids of density P and 2P are mixed together thoroughly. Whats the density of the mixture provided the total volume remains constant?

1.4p/3 2. 3p/2 3. 3p 4.5p/3

im getting 4p/3...:frown: is that correct?
 
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  • #2
Correct -

One has m/[itex]\rho[/itex] = V, so m/[itex]2\rho[/itex] = V/2, based on equal masses, so

total mass = 2m, and total volume = V + V/2 = 3/2 V.
 
  • #3
thanx a lot... exams is tomorrow.. pray for me guys! :D:D
 

1. What is the definition of "Mixed Liquids Density"?

The density of a mixture of two or more liquids is the mass of the mixture divided by the volume of the mixture.

2. How is the density of mixed liquids calculated?

The density of mixed liquids can be calculated by adding the mass of each liquid and then dividing by the total volume of the mixture.

3. Why is it important to know the density of mixed liquids?

The density of mixed liquids is important for various reasons, such as determining the concentration of a solution, predicting the behavior of the mixture, and understanding the physical properties of the mixture.

4. Can the density of mixed liquids change over time?

Yes, the density of mixed liquids can change over time due to factors such as temperature, pressure, and chemical reactions between the liquids.

5. How can the density of mixed liquids be measured in a laboratory setting?

The density of mixed liquids can be measured using various techniques such as a hydrometer, pycnometer, or by calculating the mass and volume of the mixture using a balance and graduated cylinder.

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