A certain metal oxide has the formula MO where M denotes the metal. A 50.61g sample of the compound is strongly heated in an atmosphere of hydrogen...

A certain metal oxide has the formula MO where M denotes the metal. A 50.61−g sample of the compound is strongly heated in an atmosphere of hydrogen to remove oxygen as water molecules. At the end, 40.66 g of the metal is left over. If O has an atomic mass of 16.00 amu, calculate the atomic mass of M and identify the element.

 amu

 Zn 

 Cu 

 Ag 

 Cd 

 Fe 

 Mg 

 Hg