September 2018 2 21 Report

Nazwij i podaj ilość atomów .
Rb -
O ( 3 na dole) -
2ca -
3Br(2 na dole) -

h2o-
Fe(2 na dole)O(3 na dole) -
H(2 na dole)CO(3 na dole)-

bardzo prosze o pomoc dam naj !


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