Complete the writing of this exercise.
Calculate the density of mercury.

We want to measure the mass of 20 mL of mercury.

We perform the following manipulation:

Step 1: We fill the graduated cylinder with 20 mL of mercury.
Step 2: We place a beaker on the balance and tare the balance. The balance displays 0 g.
Step 3: We pour the contents of the graduated cylinder into the beaker. Then we note the balance reading in the table.

Diagram of the manipulation

Step 1:
Let's calculate the density of mercury.

Step 2:
The formula to use is:
ρ = m/Vm / V

Step 3:
Given data:
m = 270  g
(Use g to get g/L.)

V = 20  mL = 0.020.0200.020  L
(Use L to get g/L.)

Step 4:
Calculation
ρ = 270  / 0.020.0200.020

Result:
ρ = 1350013,50013,500  g/L
(1→value 2→unit)

Step 5:
Conclusion:
The density of mercury is equal to 1350013,50013,500  g/L (value unit).