a 2x2x5 ecology block weighs 20
50 #
10000000 pounds
One liter weighs 1000 grams (1 Kg) 2 liters is twice that.
http://www.engineersedge.com/commercial_lumber_sizes.htm
like 110=-120
~2880lb
Concrete weighs about 150#'s per cubic foot. Given that your measurements are 2'x2'x4', the block contains about 16 cubic feet. 16 cubic feet of concrete at 150#'s is about 2400#'s per block.
2 ton
Each store may charge a different price depending on the area you live in. Call one of your local hardware stores to find out the exact price.
Density of concrete varies, but those dimensions would yield 31.3 cubic feet of concrete at an average 133 lbs per cubit foot - making 4,100 lbs (or around 2 tons).
50 #
How much does a 2 liter of pennies weigh?
it would weigh 2 ounces.
50 lbs Answer 2: Salt blocks can weigh anything from 4 pounds ( called a salt brick due to it's shape and size) all the way up to 50 pound blocks.
of what are they
Modst weigh about 2 pounds.
2