Question

the polypropylene cubes have a density of 0.946 grams per milliliter. identify the true statement(s). select all that apply. a. the cube sinks in methanol because methanols density is greater than the cubes density. b. the cube floats on water because the waters density is greater than the cubes density. c. the cube sinks in methanol because methanols density is less than the cubes density. d. the cube floats on ethylene glycol because the cubes density is greater than ethylene glycols density.

Explanation:

Step1: Recall density - float/sink rule

If object density < liquid density, object floats; if object density > liquid density, object sinks.

Step2: Analyze each option

Density of water is about 1 g/mL. Methanol density is about 0.79 g/mL, ethylene - glycol density is about 1.11 g/mL. Cube density is 0.946 g/mL.

Answer:

B. The cube floats on water because the water’s density is greater than the cube’s density.
C. The cube sinks in methanol because methanol’s density is less than the cube’s density.