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250 grams is about four-fifths as heavy as a Human Heart
In other words, it's 0.810 times the weight of a Human Heart, and the weight of a Human Heart is 1.20 times that amount.
(human; adult)
The average human heart weighs about 310 g. Each minute, the heart pumps between 10 and 20 liters (3 to 5 gallons) of blood through its chambers.
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