Experts...the mass of MgCl2 sholud be dissolved in 750 gm of water in order to prepare a 1.05 m solution is...?
Given:
mass of solvent, that is , water = 750
molality = 1.05 m
Thus, using the formula :
molality =
1.05 =
number of moles of MgCl2 = 0.7875 moles
Now, number of moles = mass / molar mass
0.7875 = mass /95
mass of MgCl2 = 74.81 g
Thus, 74.81 g of MgCl2 is required to dissolve in 750 g of water to make 1.05 molal solution.
mass of solvent, that is , water = 750
molality = 1.05 m
Thus, using the formula :
molality =
1.05 =
number of moles of MgCl2 = 0.7875 moles
Now, number of moles = mass / molar mass
0.7875 = mass /95
mass of MgCl2 = 74.81 g
Thus, 74.81 g of MgCl2 is required to dissolve in 750 g of water to make 1.05 molal solution.