163 nanograms = 0.000000163 grams. What exactly are you asking?
not that many as smoking a cigarette
The technical term for a joint is a "Marijuana cigarette".
A cigarette smoker will still be able to spell "cigarette" and "marijuana".
Cigarette smoke contains up to 11.5 nanograms of mercury per cigarette in mainstream smoke and up to 16.6 nanograms of mercury per cigarette in side stream smoke. A nanogram is a billionth of a gram. Mercury is a heavy metal that exists in many places throughout the earth. As a result, some of the food we eat contains varying trace levels of mercury. The same applies to tobacco.
There are 453,592,370,000 nanograms in one pound
A million nanograms.
There are 1000000 nanograms in a milligram. Therefore 2533 nanograms is 0.002533 milligrams.
There are 1000000 nanograms in a milligram. Therefore there are 0.000108 milligrams in 108 nanograms.
There are 1000000 nanograms in a milligram. Therefore 4 nanograms is 0.000004 milligrams.
There are 1000000 nanograms in a milligram. Therefore 25 milligrams will be 25,000,000 nanograms.
There are 1000000 nanograms in a milligram. Therefore 1000 nanograms is 0.001 milligrams.
There are 1000 nanograms in a microgram. You have to multiply micro by 1000 to convert to nanograms. 10*1000 is 10,000 nanograms.