Determine the density of the following fluids and objects. make conversions where necessary to make your final answer in g/mL or g/cm3

1) 50mL of milk that has a mass of 73g

2) a one litre bottle (1000mL) of cider has a mass of 1.2kg

3) an eraser with a volume of 45cm3 and a mass of 19g

4) a cork with a volume of 14cm3 and a mass of 2g

1) δ = 1.46 g/mL

2) δ = 1.2 g/mL

3) δ = 0.422 g/cm³

4) δ = 0.143 g/cm³

Explanation:

density (δ) = mass (m) / volume (V) [=] g/mL

1) V = 50 mL

∴ m = 73 g

⇒ δ = (73 g) / (50 mL)

⇒ δ = 1.46 g/mL

2) V = 1000 mL

∴ m = (1.2 Kg) * (1000 g/Kg) = 1200 g

⇒ δ = (1200 g) / (1000 mL)

⇒ δ = 1.2 g/mL

3) V = 45 cm³

∴ m = 19 g

⇒ δ = (19 g) / (45 cm³)

⇒ δ = 0.422 g/cm³

4) V = 14 cm³

∴ m = 2 g

⇒ δ = (2 g) / (14 cm³)

⇒ δ = 0.143 g/cm³