GASES UNITES WEIGHT KILOGRAMS (Kg) GAS CUBIC METERS (Nm3) LIQUID LITERS (L) OXYGEN 1 Kilogram 1.0 0.6996 0.8762 1 Nm3 Gas 1.4282 1.0 1.2511 1 L Liquid 1.1416 0.7995 1.0 NITROGEN 1 Kilogram 1.0 0.7996 1.2349 1 Nm3 Gas 1.2506 1.0 1.5443 1 L Liquid 0.8083 0.6464 1.0 ARGON 1 Kilogram 1.0 0.5605 0.7176 1 Nm3 Gas 1.78400 1.0 1.2802 1 L Liquid 1.3936 0.7812 1.0 NEON 1 … 1 cubic meter of liquid nitrogen weighs 804 kilograms [kg] 1 cubic foot of liquid nitrogen weighs 50.19208 pounds [lbs] Liquid nitrogen weighs 0.804 gram per cubic centimeter or 804 kilogram per cubic meter, i.e. Nitrogen gas weighs 0.001251 gram per cubic centimeter or 1.251 kilogram per cubic meter, i.e. density of liquid nitrogen is equal to 804 kg/m³; at -195.79°C (-320.422°F or 77.36K) at standard atmospheric pressure. density of nitrogen gas is equal to 1.251 kg/m³; at 0°C (32°F or 273.15K) at standard atmospheric pressure .