Use dimensional analysis.


Now you try converting moles to grams. All you have to do is start with MOLES (Unlike the previous examples) over 1 then multiply that ratio by the ratio of molar mass over 1 mole. Hope this helps!
Answer: The U.S. has a greater gold resource
Explanation: Canada has 3,500 tons while the U.S. has 6,000
They go through radioactive decay because when atoms are unstable by going through it they are emitting radiation in natural process and they gain stability by losing energy.