What is the mass, in kg, of 2.75 liters of the liquid glycerol, which has a density of 1.26 g/ml?

Answer 1

Start with known relationships:

1 L = 1000 mL

1 kg = 1000 g

2.75 L x (1000 mL/ 1 L) x (1.26 g/ 1 mL) x (1 kg/ 1000 g) = 3.465 kg = 3.47 kg

Make sure all units cancel except for kg (mass of liquid glycerol) and that becomes the unit in your answer.