tentukan kemolalan NaCl 10% massa dalam air! (Mr NaCl = 58,5)

10% Nacl = 10 gram nacl
90 % air = 90 gram aie

Molal = gr terlarut/mr x 1000/gram terlarut
Molal = 10/58,5 x 1000/90
Molal = 1,89 molal