Explanation:
Total force is total weight of liquid.
Weight = Mass x Acceleration due to gravity
Liquid 1
Volume = 0.574 L = 574 cm³
Density = 2.50 g/cm³
Mass = 574 x 2.50 = 1435 g = 1.435 kg
Liquid 2
Volume = 0.445 L = 445 cm³
Density = 1.04 g/cm³
Mass = 445 x 1.04 = 462.8 g = 0.463 kg
Liquid 3
Volume = 0.498 L = 498 cm³
Density = 0.659 g/cm³
Mass = 498 x 0.659 = 328.18 g = 0.33 kg
Total mass of liquids = 1.435 + 0.463 + 0.33 = 2.228 kg
Weight = Mass x Acceleration due to gravity
Weight = 2.228 x 9.81
Weight = 2.228 x 9.81 = 21.86 N
Force on the bottom of the container due to these liquids = 21.86 N