Question

1. if liquid b is water, which has a density of 1 g/ml, what might be the density of liquid a?

a. 2 g/ml
b. 1.5 g/ml
c. 0.5 g/ml
d. 1 g/ml

Explanation:

Step1: Analyze the diagram (liquid layers)

From the diagram, Liquid A is above Liquid B (water, density \(1\ \text{g/mL}\)). Substances with lower density float on higher - density substances. So Liquid A must have a density less than \(1\ \text{g/mL}\).

Step2: Evaluate the options

• Option A: \(2\ \text{g/mL}\) is greater than \(1\ \text{g/mL}\), so A is incorrect.
• Option B: \(1.5\ \text{g/mL}\) is greater than \(1\ \text{g/mL}\), so B is incorrect.
• Option C: \(0.5\ \text{g/mL}\) is less than \(1\ \text{g/mL}\), which fits the condition of floating on water.
• Option D: \(1\ \text{g/mL}\) is equal to water's density, and substances with equal density would mix or be in the same layer, not floating above, so D is incorrect.

Answer:

C. 0.5 g/mL