Odpowiedź:
Zad 1.
n = ?
Cm = 8 mol/dm³
V = 100 cm³ = 0,1 dm³
Cm = [tex]\frac{n}{V}[/tex]
n = Cm * V
n = 8 mol/dm³ * 0,1 dm³
n = 0,8 mol
Zad 2.
V = ?
n = 8 mol
Cm = 4 mol/dm³
Cm = [tex]\frac{n}{V}[/tex]
V = [tex]\frac{n}{Cm}[/tex]
V = [tex]\frac{8 mol}{4 mol/dm^3}[/tex]
V = 2 dm³
Zad 3.
V = ?
m = 224 g
M = 56 g/mol
Cm = 2 mol/dm³
Cm = [tex]\frac{n}{V}[/tex]
V = [tex]\frac{n}{Cm}[/tex]
n = [tex]\frac{m}{M}[/tex]
n = [tex]\frac{224 g}{56 g/mol}[/tex]
n = 4 mol
V = [tex]\frac{4 mol}{2 mol/dm^3}[/tex]
V = 2 dm³
