Diketahui larutan NaOH 2m, massa molar 40 gr/mol.massa NaOH terlarut?

[MOLALITAS | X SMA]

m = mol/kg pelarut
*asumsi massa pelarut = 1 kg

2 = m/1
m = 2 mol

Massa = mol x Mr
Massa = 2 x 40
Massa = 80 gram