One cord of green (damp) hardwood can weigh between 5,000 and 6,000 lbs.
2500 lbs aprox
a standard cord (128 cubic feet) of hardwood and 1 ton of rice coal have about the same btu's so 20 cords ~ 20 tons http://www.uwsp.edu/CNR/wcee/keep/Mod1/Whatis/energyresourcetables.htm
They weigh about 1 ounce !
6
the weigh 1-7 ounces
You cannot weigh an area. Just as you cannot weigh a distance. (How much does one centimeter weigh?)
how much does 1 cubic yard of carpeting with padding weigh
Quartz weigh about 1 and a half pounds
Ladybugs weigh like 1 gram.
1 1/4
1 Cord.
How much does 1 cubic meter of fuel oil weigh