It's about one-thirty-five-thousandth as heavy as a liter of Water
In other words, 0.0000290 kilograms is 0.000028999190 times the weight of a liter of Water, and the weight of a liter of Water is 34,483.720 times that amount.(fresh; 4° C / 39.2° F; maximum density)
Contrary to popular belief, 1 liter (0.0.264172052358148 gal) of water at 4° C / 39.2° F (its point of maximum density) weighs 1.000028 kg rather than 1 kg exactly. The total volume of water on the planet Earth is about 13,590,000,000,000,000,000 (13.59 quntillion) L (3,590,000,000,000,000,000 gallons).
It's about one-forty-five-thousandth as heavy as a Human Brain
In other words, the weight of a Human Brain is 46,500 times 0.0000290 kilograms.(adult)
The average weight of an adult human brain is between 1.350 kilograms. In humans and primates, sight and vision utilize about 30 different parts of the brain which together account for about half of the brain's size.
It's about one-eighty-thousandth as heavy as a Chihuahua
In other words, 0.0000290 kilograms is 0.00001290 times the weight of a Chihuahua, and the weight of a Chihuahua is 77,500 times that amount.(a.k.a. Chihuahue(o) (FCI standard)
The F&d&ration Cynologique Internationale (FCI) calls for Chihuahuas to weigh about 1.5 to 3 kg. Relative to their body sizes, Chihuahuas have the largest brain size of any dog breed.
It's about one-one-hundred-thousandth as heavy as a Brick
In other words, 0.0000290 kilograms is 0.00001000 times the weight of a Brick, and the weight of a Brick is 100,000 times that amount.(Standard, traditional face brick - 1,900 cu. cm (120 cu. in))
A standard, traditional face brick weighs an average of 2.9 kg. The steeple of the Church of St. Martin in Landshut, Germany is said to be the tallest brick tower in the world at a height of 130.6 m (428.5 ft) and was constructed using an estimated 650,000 bricks.
It's about one-one-hundred-fifty-thousandth as heavy as a Gallon of Paint
It's about one-one-hundred-fifty-thousandth as heavy as a Cat
In other words, the weight of a Cat is 200,000 times 0.0000290 kilograms.(Felis catus) (Domestic; healthy weight)
The average domestic cat should weigh between 4 and 5 kg. Cats are known for their righting reflex, which allows them to land on their feet and survive falls from heights of 1 m (3 ft) up to about 21 m.
It's about one-two-hundred-fifty-thousandth as heavy as a Bowling Ball
In other words, 0.0000290 kilograms is 0.00000426227040 times the weight of a Bowling Ball, and the weight of a Bowling Ball is 234,616.7430 times that amount.(most common selection among male bowlers)
With an allowable range of 4.989516070 kilograms, the most-preferred bowling ball weight among adult, male bowlers is 6.803885550 kilograms. Because regulation balls measure the same diameter irrespective of their weight, ball density varies by size and balls weighing less than about 5 kg (11 lbs) will float in water.