What is the mass of 0.5 liters of mercury milk alcohol?

Body weight can be calculated using the formula:
m = ρ * V, where m is the required body mass (kg), ρ is the body density (kg / m³), V is the occupied volume (m³).
Weight of alcohol:
m1 = ρ1 * V, where ρ1 = 800 kg / m³, V = 0.5 l = 0.5 * 10-³ m³.
m1 = ρ1 * V = 800 * 0.5 * 10-³ = 0.4 kg
Milk weight:
m2 = ρ2 * V, where ρ2 = 1030 kg / m³, V = 0.5 l = 0.5 * 10-³ m³.
m2 = ρ2 * V = 1030 * 0.5 * 10-³ = 0.515 kg.
Mercury mass:
m3 = ρ3 * V, where ρ3 = 13600 kg / m³, V = 0.5 l = 0.5 * 10-³ m³.
m3 = ρ3 * V = 13600 * 0.5 * 10-³ = 6.8 kg.