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 = number of  moles of solute ×1000mass of solvent 
1.05 = number of moles of MgCl2 × 1000750
number of moles of MgCl​2 = 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.

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