August 2018 1 19 Report
Stechiometria. pomozcie prosze!! :*
zad 3
oblicz mase 3,01 • 10²³ atomów potasu
zad 4
oblicz masę 12,04 • 10²³ cząsteczek wody
zad 5
oblicz, ile czasteczek tlenu znajduje sie w 3,2 g tlenu.

bardzo prosze was:(
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