Z def. stęż. procent. 20g soli------100g roztworu xg soli-------30g roztworu x=20*30/100x = 6g
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Z def. stęż. procent.
20g soli------100g roztworu
xg soli-------30g roztworu
x=20*30/100
x = 6g
mroztworu = 30g
C%= 20%
Obliczyc:
msoli = ?
msoli = C% x mroztworu/100%
msoli = 20% x 30g/100%
msoli = 6g
Odp: Na dnie parownicy pozostało 6 gram soli.