Answer :
add the reltive atomic mass of Ca and O which are 40 and 16 respectively after addition we get molecular mass of CaO which is 40+16=56 now divide atomic mass of O by molecular mass of CaO and multiply it with 100 as show n 16/56 *100=28.57%
The mass percent of oxygen in the given calcium oxide (CaO) is 28.57%.
The given parameters;
compound = CaO
The molecular mass of the given calcium oxide (CaO) is calculated as follows;
CaO = 40 + 16 = 56 g/mol
mass of oxygen = 16
The mass percent of oxygen in the given calcium oxide (CaO) is calculated as follows;
[tex]mass \ percent = \frac{16}{56} \times 100\%\\\\mass \ percent = 28.57 \ \%[/tex]
Thus, the mass percent of oxygen in the given calcium oxide (CaO) is 28.57%.
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