A 50.0 mL graduated cylinder has a mass of 67.6 g. When it is filled with an unknown liquid to the 38.8 mL mark, the cylinder and liquid combined have a mass of 119.4 g. Calculate the density of the liquid in g/cm3. (1 mL = 1 cm3.)

nm, the answer is 1.34

119.4 g = mass cylinder + liquid

-67.6 g = mass empty cylinder
---------
51.8 g = mass liquid
density liquid = mass/volume = ?

To calculate the density of the liquid, we need to know its mass and volume.

First, we need to determine the mass of the liquid alone. To do this, we subtract the mass of the empty cylinder from the mass of the cylinder and liquid combined:

Mass of the liquid = Mass of the cylinder and liquid combined - Mass of the empty cylinder

Mass of the liquid = 119.4 g - 67.6 g
Mass of the liquid = 51.8 g

Next, we need to calculate the volume of the liquid. The liquid fills the graduated cylinder up to the 38.8 mL mark. This means that the volume of the liquid is 38.8 mL or 38.8 cm^3.

Now that we have the mass and volume of the liquid, we can calculate the density:

Density = Mass / Volume

Density = 51.8 g / 38.8 cm^3

Density = 1.335 g/cm^3

So, the density of the liquid is 1.335 g/cm^3.