CO monoxid de carbon
M CO= 12+16=28 g/mol
Raport atomic C÷O= 1÷1
Raport de masa mC÷mO= 12÷16
Compozitia procentuala
28g CO......................12g C...................16gO
100g.............................X...........................Y
X= 100*12/28= 42,85% C Y= 100*16/28= 57,15% O