W(NaCl) = 20%
V(H2O) = 40 ml
W(NaCl 1) = 6 %
m(розчину) - ?
0.2: 0.06 = 40:x
0.2x = 2.4
x = 12
m(розчину) = 12 мл
проверка:
0.06 * 56 = 3.36
3.36 / 56 = 0.06; 0.06 = 0.06
W(NaCl) = 20%
V(H2O) = 40 ml
W(NaCl 1) = 6 %
m(розчину) - ?
0.2: 0.06 = 40:x
0.2x = 2.4
x = 12
m(розчину) = 12 мл
проверка:
0.06 * 56 = 3.36
3.36 / 56 = 0.06; 0.06 = 0.06