(750 mi) x ( 1 gal / 12 mi) x (4.12 $/gal) = $257.50
The specific weight of gasoline is 6.073 pounds per gallon. The density of gasoline varies due to the quality of the gasoline, but is generally between 0.71-0.77 kilograms per liter.
11.43 lbs/gal
The weight of 32% hydrochloric acid (HCl) liquid per gallon is approximately 9.7 pounds.
The mass flow rate of gasoline from a pump depends on the pump's flow rate and the density of gasoline. It is typically measured in kilograms per second or pounds per hour. The mass flow rate can be calculated by multiplying the volumetric flow rate (in liters per minute or gallons per hour) by the density of gasoline (in kg/L or lb/gal).
In 1975, the US national average for a gallon of regular gasoline was 57 cents - the equivalent of about $2.31 per gallon in 2010.
State tax is 25 cents per gallon and Federal tax is 18.4 cents for a total of 43.4 cents.
6 pounds per gallon
At night or in early morning it tends to be cooler that at midday. Thus gasoline at that time would also be cooler and more dense, so a gallon of gasoline would weight more.Since gas is sold by the gallon, the cooler it is, the more weight (or mass) of the gasoline that you receive would be higher per gallon.OR, you get more actual gasoline per gallon (and per dollar.)
The weight of 1 gallon of gasoline equals 5.8 to 6.5 lbs.
(US) one gallon:0.133680528 cubic feet230.999952 cubic inches(UK) one gallon:0.160543653 cubic feet277.419432 cubic inches
Since gasoline weighs 6.1-pounds per gallon, 4.8-gallons of gasoline weighs 29.28-pounds.