It's about as heavy as a Grain of Sand.
It's about one-and-one-fifth times as heavy as a Sesame Seed.
In other words, 0.00000000490 tons is 1.220 times the weight of a Sesame Seed, and the weight of a Sesame Seed is 0.820 times that amount.(Sesamum indicum)
A sesame seed weighs approximately 0.000000004010 tons. The McDonald's Big Mac sandwich, which is well-known for its sesame seed top bun, accounts for the consumption of an estimated 2.210 tons of sesame seeds each day.
It's about one-tenth as heavy as a Grain of Rice.
In other words, 0.00000000490 tons is 0.150 times the weight of a Grain of Rice, and the weight of a Grain of Rice is 6.70 times that amount.(long grain; 14% moisture content)
A single long grain of rice weighs an average of 0.0000000320 tons. A staple through most of human history, archaeological evidence indicates that the earliest rice cultivation was about 11,500 years ago.
It's about seven times as heavy as a Grain of Sugar.
In other words, 0.00000000490 tons is 7.110 times the weight of a Grain of Sugar, and the weight of a Grain of Sugar is 0.1410 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 0.0000000006890 tons. Sugar consumption varies widely by country; the average citizen of the United States consumes about 0.0675 tons of sugar each year.
It's about fifteen times as heavy as a Poppy Seed.
In other words, the weight of a Poppy Seed is 0.067 times 0.00000000490 tons.(Papaver somniferum)
Fifty percent oil by weight, a poppy seed weighs approximately 0.000000000330 tons. 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 one-fiftieth as heavy as a Raindrop.
In other words, the weight of a Raindrop is 50 times 0.00000000490 tons.(a.k.a. drop, a.k.a. droplet) (average)
The weight of a raindrop depends heavily on the type of weather, but averages about 0.000000200 tons. 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.
It's about 75 times as heavy as a Grain of Salt.