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also called organic compost
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About
Compost is decomposed organic material that weighs about 5.0 ounces (142 g) per cup.
Compost has a typical bulk density of about 37 pounds per cubic foot (0.6 g/mL). Because it consists of decayed plant scraps and organic waste, it has a loose texture filled with air pockets. This porous structure makes it far lighter than dense mineral soil or sand, which can weigh nearly twice as much for the same volume. A standard five-gallon (19 L) bucket holds about 25 pounds (11 kg) of finished compost.
From Wikipedia
Compost is a mixture of ingredients used as plant fertilizer and to improve soil's physical, chemical, and biological properties. It is commonly prepared by decomposing plant and food waste, recycling organic materials, and manure.
Read more on Wikipedia →Text from Wikipedia’s “Compost” article, CC BY-SA 4.0.
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One cup weighs
5.01 oz (142 g)
Quick answer
One US cup of compost weighs about 5.0 ounces (142 g). That makes it roughly 40 percent lighter than an equal volume of water.
Typical figures, the same ones every comparison on the site uses; real ones vary.
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