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A sample of paramagnetic salt contains 2...

A sample of paramagnetic salt contains `2.0 xx 10^(24)` atomic dipoles each of dipoles moment `1.5 xx 10^(-23) J T^(-1)`. The sample is placed under a homogeneous magnetic field of 0.64 T, and cooled to a temperature of 4.2K. The degree of magnetic saturation achieved is equal to 15%. What is the total dipole moment of the sample for a magnetic field of 0.98 T and a temperature of 2.8 K? (Assume Curie's law)

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