Question

Ajutor! DAU COROANĂ!!
DOAR CINE ȘTIE!!!

Answer 1

T₁=7°C=280 K

T₂=420 K

V₁=V₂=V=constant=>p₁/T₁=p₂/T₂=>p₂=T₂*p₁/T₁=10⁵*420/280=1,5*10⁵=1.5 atm

μ=28 g/mol=0,028 kg/mol

p₁V=ν₁RT₁=>ν₁=p₁V/RT₁=10⁵*1/8,314*280=42,95 moli

ν₁=m₁/μ=>m₁=ν₁*μ=1,2 kg

ρ₁=m₁/V=1,2 kg/m³

p₂V=ν₂RT₂=>ν₂=p₂V/RT₂=1,5*10⁵*1/8,314*420=42,95 moli

ν₂=m₂/μ=>m₂=ν₂*μ=1,2 kg

ρ₂=m₂/V=1,2 kg/m³

Δρ=0