Răspuns :
MgO
MMgO=24+16=40
40 g MgO-----24 gMg--------16 gO
100 gMgO------x g Mg--------y g O
X=100.24:40=60 la suta Mg
Y=100.16:40=40 la suta O
MMgO=24+16=40
40 g MgO-----24 gMg--------16 gO
100 gMgO------x g Mg--------y g O
X=100.24:40=60 la suta Mg
Y=100.16:40=40 la suta O
M MgO= 24+16= 40g/mol
40 g MgO...........24g Mg...................16g O
100g ....................X..............................Y
X=100*24/40=60% Mg
Y=100*16/40=40% O
40 g MgO...........24g Mg...................16g O
100g ....................X..............................Y
X=100*24/40=60% Mg
Y=100*16/40=40% O