I would have to say half a miligram - one miligram at the most.
A grain is equal to 65mg. So, 10 grains is equal to 650mg.
16.1997275 milligrams
30 milligrams is less than half of one grain. to be exact, 0.462970 grains.
The mass of one grain of rice is 25 milligram or .025 grams. There are about 29,000 rice grains in approximately one pound of long-grain white rice.
1,000 milligrams = 1 gram about 450 grams = 1 pound So about 450,000 milligrams in 1 pound. Of the choices you listed, the best match for a grain of salt has to be 1 milligram.
(1/8) grain = 8.09986375 milligrams FYI: Google "convert 1/8 grain to milligrams"
16.1997275 milligrams
10
A grain of rice weighs roughly 0.0725 ounces.
A grain is equal to 65mg. So, 10 grains is equal to 650mg.
a grain of rice
Rice as a whole grain is a natural grain.
One grain of rice is called a grain of rice. The plural form is grains of rice.
16.1997275 milligrams
Not sure what you mean. Can a robin weigh 200 mg? Can a robin eat 200 mg? 200 mg is about the mass of a grain of sand perhaps a quarter of a grain of rice.
No, rice is a grain.
No a grain of rice is not a root.