A scientist has a sample of a liquid with a density of 2.5 G/ML. Which of the following objects will sink in liquid.

A) object A: mass = 1g, volume = 10cm3
B) object B: mass = 10g, volume = 1cm3
C)object C: mass = 20g, volume = 10cm3
D) object D: mass = 10g, volume = 20cm3

1 answer

The mass of an object alone cannot determine whether it will sink or float in a liquid. It depends on the density of the object compared to the density of the liquid.

To determine if an object will sink or float in liquid with a density of 2.5 g/mL, we need to calculate the density of each object first. Density is calculated by dividing mass by volume:

Density = Mass / Volume

A) Density of object A = 1g / 10cm3 = 0.1 g/cm3
B) Density of object B = 10g / 1cm3 = 10 g/cm3
C) Density of object C = 20g / 10cm3 = 2 g/cm3
D) Density of object D = 10g / 20cm3 = 0.5 g/cm3

Compared to the density of the liquid (2.5 g/mL or 2.5 g/cm3), object A and D have a lower density and will float, while object B has a higher density and will sink. Object C has a density close to that of the liquid, so it may float or sink depending on factors such as surface tension and shape.

Therefore, the answer is B) object B: mass = 10g, volume = 1cm3.