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Dane :
mr=320g
Cp=10%
Szukane :
ms=?
Cp=ms/mr*100%
10%=ms/320*100%
10=ms/32*10 / *32
320=ms*10
320=10ms / 10
32g=ms
mr=320 g
c%=10%
ms=C%*mr/100%=10%*320g/100%=32g
1mol HCOOH to 6,02*10^23 cząsteczek.
46 - 6,02*10^23
32 - x
x=32*6,02*10^23/46= 4,19*10^23