Rationale
Fluid B, C, A will separate in a beaker from bottom to top.
The order of separation of the fluids in a beaker is determined by their densities, calculated as mass divided by volume. Fluid B has the highest density, followed by Fluid C, and finally Fluid A with the lowest density, leading to the arrangement from bottom to top.
A) A, B, C
This arrangement is incorrect because it places Fluid A, which has the lowest density, at the bottom. Fluid A's density of 1.03 g/mL is less than that of both Fluid B and Fluid C, meaning it would float above them in the beaker.
B) B, C, A
Fluid B is the densest at 0.79 g/mL, followed by Fluid C at 0.90 g/mL, and Fluid A at 1.03 g/mL. This correct order reflects their densities, with the densest fluid (B) settling at the bottom and the least dense (A) floating on top.
C) C, A, B
In this arrangement, Fluid C is incorrectly placed at the bottom despite being less dense than Fluid B. Fluid C's density of 0.90 g/mL should position it above Fluid B, which is denser at 0.79 g/mL.
D) B, A, C
This option also misplaces Fluid A, placing it above Fluid B. Since Fluid A is the least dense, it cannot be below Fluid B, which has a higher density. Therefore, this arrangement does not accurately reflect the separation based on density.
Conclusion
The arrangement of fluids in a beaker is dictated by their densities, with denser fluids sinking below less dense ones. In this case, Fluid B has the highest density, followed by Fluid C, and Fluid A has the lowest density, confirming the correct order of separation as B, C, A from bottom to top. Understanding density is crucial in predicting how different substances will behave when mixed.
