16.26 milligram of sample of an element X contains 1.66 xx 10^(20) atoms. What is the atomic mass of the element X ?

16.26 milligram of sample of an element X contains 1.66 xx 10^(20) ato

1.	16.26 milligram of sample of an element X contains 1.66 xx 10^(20) atoms. What is the atomic mass of the element X ?
Answer» Solution :`1.66 XX 10^(20)` atoms X have MASS = 16.26 MG `6.022 xx 10^(23)` atoms of X have mass `= ((6.022xx10^(23)"atoms"))/((1.66xx20^(20)"atoms"))xx(16.26mg)` `=59.0xx10^(3)mg=59.0g`.