http://simviation.com/rinfo737.htm
This site here says that the 737 holds 6,875 gallons or 26,025 liters of fuel max. cap.
That means each wing is weighted down by 23,000 pounds at takeoff, or about 10 tons.
(one gallon of jet fuel times 6.7 equals weight in pounds)
Crazy. So where is the spilled fuel from this new accident? The entire wing is a fuel tank. Gives rise to the air compressor turbine conspiracy theory.
Your source only gives total fuel, not fuel distribution.
Other sources show over half the fuel being in fuselage tanks.