1 kg of 0.75 molal aqueous solution of sucrose can be cooled up to $$-$$4$$^\circ$$C before freezing. The amount of ice (in g) that will be separated out is __________. (Nearest integer)

[Given : K_f(H₂O) = 1.86 K kg mol^$$-$$1]

1 mol of an octahedral metal complex with formula MCl₃ . 2L on reaction with excess of AgNO₃ gives 1 mol of AgCl. The denticity of Ligand L is ____________. (Integer answer)

The number of moles of CuO, that will be utilized in Dumas method for estimation nitrogen in a sample of 57.5 g of N, N-dimethylaminopentane is _____________ $$\times$$ 10^$$-$$2. (Nearest integer)

The number of f electrons in the ground state electronic configuration of Np (Z = 93) is ___________. (Nearest integer)