P2P-syntese fra P2NP

Czeczeczecze

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Jeg kan ikke få h2o2 i en koncentration på 30 %. Kan jeg bruge 12 % i større mængde? Eller hvad kan jeg bruge i stedet for H2O2?
 

mexxx

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amieri

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Is there anything I can use instead of potassium carbonate?
 
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