Half-life | Radioactive decay | Khan Academy!
grams are weight.
Multiply the number of pounds by 453.6 to convert to grams. For example, to find the number of grams in 2 lbs., multiply 2 by 453.6 to get 907.2 grams.
How to Convert Weight to Grams | eHow
Khan Academy
Question;
I'm learning about radiation decay and I need help understanding half life in a more easier sense?
Scientists answer;
Imagine that you have 100 pennies in a box. You shake the box thoroughly, open it, and remove all pennies that show tails. That would remove somewhere around 50 pennies, more or less. These penny "nuclei" would have decayed one half-life in the time you were shaking the box. You'd have close to 50 pennies left. Now, close it up and shake it again. Another half-life has passed, and you remove the decayed pennies (showing tails). You have something like 25 pennies left after two half-life…
Leave it to a member of the godsquad to pick the worst possible example so as to ensure at least some people will be decieved by the answer to the question. It was a nice touch using the Khan reference as it lends further credability to your intellectual slight of hand.
I cannot believe you stumbled upon this convenient example that SOUNDS like the truth yet is a bald faced lie.
OR are you truly innocent of deceit and just as stupid as a bag of doorknobs?
You are dealing with something much SMALLER than half truths here.

The particles that leave the original carbon atoms and account for the NUMBER released over a known/predictable and measurable amount of time are NOT WHOLE ATOMS !!!!! The are just particles too small in mass to weigh.
I have tried to make this simple to understand. The first step in learning is to realise you could be wrong about something.
Think of it more like this...
Is your computer screen any heavier when you add a period "." at the end of a sentence?