Oblicz, ile gramów soli kuchennej i wody potrzeba do przygotowania 200g 25-procentowego roztworu?
m(r) = 200gc(p) = 25%m(s) = ?200g r - 100%x g s - 25%x = 25%*200g / 100% = 50g - masa potrzebnej ilości soli kuchennejm(rozp) = ? [czyli m(wody)]m(rozp) = m(r) - m(s) = 200g - 50g = 150gchyba takXDXD
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m(r) = 200g
c(p) = 25%
m(s) = ?
200g r - 100%
x g s - 25%
x = 25%*200g / 100% = 50g - masa potrzebnej ilości soli kuchennej
m(rozp) = ? [czyli m(wody)]
m(rozp) = m(r) - m(s) = 200g - 50g = 150g
chyba takXDXD