Not a well-formed question. You need to know what coin you're talking about - a cent, a nickel, a non-U.S. coin - - - ???
The question is usually posed in a form such as "How many grams does a 1978 U.S. dime weigh?" or "What is the weight in grams of a 1996 British £1 coin?"
A gram of gold weighs a gram
A gram of methamphetamine would weigh 1 gram on a scale.
A gram of heroin is supposed to weigh one gram, which is equivalent to about 0.035 ounces.
1 gram.
The gram already is a unit of mass.
One gram
A gram weighs 907 184.74th of a ton.
one gram
A gram of methamphetamine weighs approximately 1 gram.
A gram of blood would weigh about one gram, as blood has a density close to that of water.
a blade of grass weigh a gram? Not normal grass anyway, weigh much less
Ladybugs weigh like 1 gram.