How Many Kilograms is 20 Liters of Gasoline?

[StCharlotte]

The weight of 20 liters of gasoline ranges between 28 to 31.2 kilograms. The density of gasoline varies slightly depending on the type of gasoline and seasonal climate, with gasoline density ranging from 0.70g/cm³ to 0.78g/cm³. If the gasoline density is taken as 0.70g/cm³, then 20*0.70=14=28 kilograms. If the gasoline density is taken as 0.78g/cm³, then 20*0.78=15.6 kilograms=31.2 kilograms. The weight of gasoline itself also depends on temperature. Due to different seasonal climates, the density of gasoline changes slightly. When the temperature rises, the volume of each liter of gasoline increases, and the density decreases. When the temperature drops, the density of each liter of gasoline increases, and the volume decreases. This means that the same liter of gasoline has different weights and densities in different temperature seasons. Therefore, the mass of 1 liter of 92-octane gasoline should be m=0.725g/ml*1000ml=0.725kg=1.45 kilograms; the density of 95-octane gasoline is 0.737g/ml, so the mass of 1 liter of 95-octane gasoline should be m=0.737g/ml*1000ml=0.737kg=1.47 kilograms; the density of 90-octane gasoline is 0.72g/ml, so the mass of 1 liter of 95-octane gasoline should be m=0.72g/ml*1000ml=0.72kg=1.44 kilograms; the density of 93-octane gasoline is 0.725g/ml, so the mass of 1 liter of 95-octane gasoline should be m=0.725g/ml*1000ml=0.725kg=1.45 kilograms; the density of 97-octane gasoline is 0.737g/ml, so the mass of 1 liter of 95-octane gasoline should be m=0.737g/ml*1000ml=0.737kg=1.47 kilograms. Gasoline is a volatile, flammable hydrocarbon mixture liquid distilled and cracked from petroleum, used as fuel. It appears as a transparent liquid, is flammable, and has a distillation range of 30°C to 220°C. Its main components are C5~C12 aliphatic hydrocarbons and cycloalkanes, along with a certain amount of aromatic hydrocarbons. Gasoline has a high octane number (anti-knock combustion performance) and is divided into common grades such as 92, 95, and 98 based on octane levels. The calorific value of gasoline is approximately 44000 kJ/kg. The ignition point of gasoline is between 415-530°C. The surface of gasoline is a transparent liquid and is flammable. Gasoline usually contains mechanical impurities and water. Mechanical impurities can cause serious consequences such as clogged fuel lines and increased wear. Important characteristics of gasoline include volatility, stability, anti-knock properties, corrosiveness, and cleanliness. When adding gasoline, car owners can check the appropriate gasoline grade in the car manual or on the fuel tank cap, which is usually marked. Generally, the gasoline grade can also be determined based on the engine's compression ratio. Cars with an engine compression ratio between 8.6-9.9 should use 92-octane gasoline, those between 10.0-11.5 should use 95-octane gasoline, and those with higher compression ratios should use 98-octane gasoline. However, with the use of some new technologies, the gasoline grade cannot be determined solely based on the compression ratio. High compression ratios can also be adjusted to use lower-grade gasoline because, besides the compression ratio, other factors such as ignition timing, turbocharging technology, and Atkinson cycle technology also play a role.