Molality (in mol/kg) of a solution in which 0.13 mole of solute is dissolved in 500 gm of water is:
0.26
We know,
Molality (m) = No of gram moles of soluteMass of solvent(kg)
Mass of solvent is given to be 500 gm
(water)
Gram moles of solute is 0.13
m=( 0.13X1000)/500 =0.13 X2=0.26