katerina613
katerina613
04-12-2018
Chemistry
contestada
how many oxygen atoms
in 4 Al 2 O 3
Respuesta :
kenmyna
kenmyna
13-12-2018
The number of oxygen atoms that are in 4 Al₂O₃ are
12 atoms
Explanation
The
subscript
in a chemical formula indicate the number of atoms of element immediately before the subscript.
coefficient
is the number in front of the formula and tells us how many molecules of a given formula are present.
Since
4Al₂O₃
has coefficient of
4
and the subscript of
O
is
3
the number of O atoms =
4 x 3=12 atoms
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