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Help me with number 19 and 20 please
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5 votes
Help me with number 19 and 20 please

Help me with number 19 and 20 please-example-1
User Leonidas
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1 Answer

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