Question

If a compound contains 8.1 g of nickel and 2.29 g of oxygen, what is the mass percent of nickel in the compound

Answer 1

 The  percentage  nickel   in  the  compound is  calculated  as  follows

step  one,adding  the  total  mass
that  is  8.1g+  2.29g  =10.39g
step  two,  take  the  percentage  of  nickel  divide  total  multiply   by 100

that  is   8.1/10.39 x100=  77.95%