Seudónimo Seudónimo

28-11-2016
Chemistry

contestada

help me with number 19 and 20 please

help me with number 19 and 20 please class=

Respuesta :

Ladyt24 Ladyt24

29-11-2016

19) it's not balanced because when adding h2 and o2 u get h2o2 not h2o
20) I'm not sure

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