mariah2010
Jan 10, 2011, 08:21 PM
How do u find moles for Radium?
Unknown008
Jan 10, 2011, 11:21 PM
It will depend on what you are given. But I'll be most certain that you are given the mass of Radium.
The number of moles of radium of a certain mass m is given by:
No.\ of\ moles = \frac{m}{A_r}
Where Ar is the relative atomic mass of radium that you can find in Periodic tables.