djdksj
djdksj
26-04-2016
Chemistry
contestada
The mass percent of oxygen in CaO is (8 pts)
a) 28.5%
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miss2and22
miss2and22
26-04-2016
what is the rest of the choices but I do think it is a
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ghaniraza14
ghaniraza14
26-04-2016
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%
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