Odpowiedź:
Cn=0,5mol/dm3
Wyjaśnienie:
Cn?
v=6dm3
ms=234g
M Na2S=78g/mol
Wzory:
Cn=n/v
n=ms/M
n=234g/78g/mol=3mol
Cn=3mol/6dm3=1/2mol/dm3=0,5mol/dm3
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Odpowiedź:
Cn=0,5mol/dm3
Wyjaśnienie:
Cn?
v=6dm3
ms=234g
M Na2S=78g/mol
Wzory:
Cn=n/v
n=ms/M
n=234g/78g/mol=3mol
Cn=3mol/6dm3=1/2mol/dm3=0,5mol/dm3