Question

An object weighs 0.688 kilograms. When placed into a container of water, the level of water goes from 19.0 ml to 23.9 ml. What is the density of the object in g/mL?

A) 1.1 g/mL
B) 2.9 g/mL
C) 3.9 g/mL
D) 0.9 g/mL

Answer 1

The density of the object is calculated by dividing its mass in grams (0.688 kg) by the volume of water displaced (4.9 ml), which results in a density of 140.4 g/mL.

Step-by-step explanation:

To calculate the density of an object, we need to divide its mass by its volume.

In this case, the mass of the object is 0.688 kilograms and the change in volume of water is 23.9 ml - 19.0 ml = 4.9 ml.

The density can be calculated as:

Density = Mass / Volume

Density = 0.688 kg / 4.9 ml

Now, to convert the volume from milliliters to grams, we need to use the fact that 1 gram is equal to 1 milliliter.

So, the volume in grams would be 4.9 grams.

Therefore, the density of the object is:

Density = 0.688 kg / 4.9 g = 0.14 g/mL