Can anyone solve this?

Dear student Please find the solution to the asked query: Given T=65oC . [K=C+273 ]. so T = 338K ​Pressure =2 atm Assuming ideal nature,PV=nRT where n=1 Thus, 2.V = 1.0.0821.338 V = 13.87L =13870mL Thus Density = mass/vol = 102.21/13870 =0.0074 g/mL ​In the solid state lattice parameter a=320 pm = 3.2 x 10-8 cm d =Z×a3×NAMa = lattice parameter [edge length in this case]Z=2 for BCCNA= Avagadro's constantsod=2×(3.2 ×10-8)3×6.023 x 1023102.21 =2×32.8×10-24×6.023 x 1023102.21=3.86 =0.38g/mL Difference in density =0.38 -0.0074 = 0.373g/mL Hope this information will clear your doubts Regards