A hole
A hummingbird weighs less than a copper penny.
A gallon of water weighs about 8.3 pounds. The answer is ice. Ice weighs around 12.45 pounds, which is 50% more than a gallon of water, but when it melts and its weight is reduced by 50%, it weighs around 6.225 pounds, which is less than a gallon of water.
One kilogram of mass weighs a tiny bit more than 2.2 pounds on earth, but the same kilogram of mass weighs less than 2 pounds on Mars or the moon.
A hole.
He puts a hole in it.Or helium?
That depends on where you are. -- On Earth, 25 kilograms of mass weighs 55.1 pounds. That's less than 100 pounds. -- On Jupiter, 25 kilograms of mass weighs 145.5 pounds. That's more than 100 pounds.
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If she weighs less than 90 pounds, she is also probably very short. She should be eating about 1,000 to 1,200 calories a day.
On Earth, 3,519 kg of mass weighs 7,758 pounds. (rounded) In other places, 3,519 kg of mass weighs more or less than that.
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