You need to rewrite this question. As it is it is garbled and makes no sense.
BTW, the IUPAC name for the weird compound you have named is lead nitrate.
Solubility of lead(ii)trioxonitrate is 1000g/dm3 per 1000g of h2O at 85 degrees and 5000g of h2O. Calculate the mass of lead(ii)trioxonitrate will crystalise if 120g of the saturated solutionis cooled to 40 degrees
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