φ₁ = ρ₁ * 100 % / ρ₀ =>
ρ₁ = φ₁ * ρ₀ / 100 %
ρ₂ = φ₂ * ρ₀ / 100 %
Δρ = ρ₂ - ρ₁ = φ₂ * ρ₀ / 100 % - φ₁ * ρ₀ / 100 % = ρ₀ * (φ₂ - φ₁) / 100 %
Δm = Δρ * V
Δm = ρ₀ * (φ₂ - φ₁) * V / 100 %
Δm = 17,3 г/м³ * (50 % - 25 %) * 50 м³ / 100 % ≈ 216 г
φ₁ = ρ₁ * 100 % / ρ₀ =>
ρ₁ = φ₁ * ρ₀ / 100 %
ρ₂ = φ₂ * ρ₀ / 100 %
Δρ = ρ₂ - ρ₁ = φ₂ * ρ₀ / 100 % - φ₁ * ρ₀ / 100 % = ρ₀ * (φ₂ - φ₁) / 100 %
Δm = Δρ * V
Δm = ρ₀ * (φ₂ - φ₁) * V / 100 %
Δm = 17,3 г/м³ * (50 % - 25 %) * 50 м³ / 100 % ≈ 216 г