How much is each gallon or how far are you going is the question you should be asking
The branches but also the leaves do give most light which grows both ways so
11.0 kg = (11.0 kg)(1000 g/kg) = 11000 g
(11000 g)/(1400 cm3) = 7.857 g/cm3
Simplified = 7.86 g/cm3
