Question

Uhh ill give brainliest??

Answer 1

Explanation:

Given parameters:

Density of the ethanol  = 0.789g/mL

Volume of the ethanol in the cylinder = 900mL

Unknown:

Mass of the ethanol  = ?

Solution:

Since density is the mass per unit volume of a substance;

      mass  = density x volume

Now insert the parameters and solve;

   mass  = 0.789g/mL x 900mL

   mass  = 710g

In scientific notation we have 7.10 x 10²g