It's about 9,000,000,000 times as heavy as a Grain of Salt.
In other words, 521 kilograms is 8,910,000,000 times the weight of a Grain of Salt, and the weight of a Grain of Salt is 0.0000000001120 times that amount.The mass of a grain of salt is approximately 0.00000005850 kilograms. Salt consumption varies widely by country; the people of the United States consume a combined total of about 2,730,000 kilograms of salt each year.
It's about 1,500,000,000 times as heavy as a Poppy Seed.
In other words, the weight of a Poppy Seed is 0.000000000590 times 521 kilograms.(Papaver somniferum)
Fifty percent oil by weight, a poppy seed weighs approximately 0.000000300 kilograms. The true pigment of a poppy seed is brown in color, while the characteristic bluish color is an optical illusion caused by a layer of calcium oxalate crystals refracting light rays.
It's about 850,000,000 times as heavy as a Grain of Sugar.
In other words, 521 kilograms is 834,000,000 times the weight of a Grain of Sugar, and the weight of a Grain of Sugar is 0.00000000120 times that amount.(a.k.a. white sugar, a.k.a. white refined sugar, a.k.a. table sugar, a.k.a. sucrose, a.k.a. saccharose)
A grain of sugar weighs approximately 0.0000006250 kilograms. Sugar consumption varies widely by country; the average citizen of the United States consumes about 61.2 kg of sugar each year.
It's about 150,000,000 times as heavy as a Sesame Seed.
In other words, 521 kilograms is 143,000,000 times the weight of a Sesame Seed, and the weight of a Sesame Seed is 0.000000006990 times that amount.(Sesamum indicum)
A sesame seed weighs approximately 0.000003640 kilograms. The McDonald's Big Mac sandwich, which is well-known for its sesame seed top bun, accounts for the consumption of an estimated 2,009.32 kg of sesame seeds each day.
It's about 100,000,000 times as heavy as a Grain of Sand.
In other words, 521 kilograms is 120,000,000 times the weight of a Grain of Sand, and the weight of a Grain of Sand is 0.00000000830 times that amount.(medium grain)
With tremendous variety in the size of grain and the component material, grains of sand weigh an average of 0.00000440 kilograms. In 2007, a team of seven in Myrtle Beach created the world's tallest sandcastle, which measured 15.10 m (49.55 ft) in height.
It's about 20,000,000 times as heavy as a Grain of Rice.
In other words, 521 kilograms is 18,000,000 times the weight of a Grain of Rice, and the weight of a Grain of Rice is 0.0000000560 times that amount.(long grain; 14% moisture content)
A single long grain of rice weighs an average of 0.0000290 kilograms. A staple through most of human history, archaeological evidence indicates that the earliest rice cultivation was about 11,500 years ago.
It's about 3,000,000 times as heavy as a Raindrop.
In other words, the weight of a Raindrop is 0.000000300 times 521 kilograms.(a.k.a. drop, a.k.a. droplet) (average)
The weight of a raindrop depends heavily on the type of weather, but averages about 0.0002 kilograms. The familiar teardrop shape of a raindrop is actually an optical illusion, caused by the reflection of the light and the motion of the drop.